Question 1
A hypothesis is an assumption about a population parameter such as a mean or a proportion.
True 

False 
Question 2
The alternative hypothesis, denoted by H_{0}, represents the status quo and involves stating the belief that the population parameter is, ≤, =, or ≥ a specific value.
True 

False 
Question 3
The null hypothesis is believed to be true unless there is overwhelming evidence to the contrary.
True 

False 
Question 4
A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam is equal to 45 minutes. The correct hypothesis statement would be _______________.
H_{0}: = 45; H_{1}: > 45 

H_{0}: = 45; H_{1} 45 
H_{0}:_{ } 45; H_{1}: = 45 

H_{0}: = 45; H_{1}: < 45 
Question 5
Black Diamond produces climbing equipment and would like to test whether a new steel carabiner has an average breaking strength greater than 25 Kn (kilonewtons). A Type II error would occur if the testers conclude that the average breaking strength is _____________________.
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn 

equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn 
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn 

less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn 
Question 6
When conducting a hypothesis test for the population mean when sigma is known and the sample size is 30 or more, the test statistic follows the ______________________
Student's tdistribution 

binomial distribution 
normal distribution 

exponential distribution 
Question 7
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The critical value for this hypothesis test would be _______.
2.05 

1.96 
1.645 

1.28 
Question 8
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The test statistic for this hypothesis test would be _______.
t = 1.89 

z = 1.70 
t_{ } = 2.06 

z = 2.23 
Question 9
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The conclusion for this hypothesis test would be that because the test statistic is ___________.
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes 

more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes 
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes 

less than the critical value, we can conclude that the average length of an online video is more than 8 minutes 
Question 10
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q1: What is the correct hypothesis statement?
H_{0} : $20 H_{1}: $20 

H_{0}: H_{1}: 
H_{0}: H_{1}: 
Question 11
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q2: What is the critical t value (tα)?
Question 12
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q3: What is the test statistic (tx‾) for this problem?
Question 13
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q4: Within what range does the pvalue for this problem lie?
0.10 and 0.20 

0.05 and 0.15 
0.10 and 0.35 

0.15 and 0.25 
Question 14
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q5: Because the pvalue ≥ α, we reject the null hypothesis. Therefore, the Department of Labor concludes there is not sufficient evidence to support the null hypothesis.
True 

False 
Question 15
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.The pvalue for this hypothesis test would be ____________.
Question 16
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.Which of the following statements is true?
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. 

Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. 
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. 

Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. 
a
Question 1
A hypothesis is an assumption about a population parameter such as a mean or a proportion.
True 

False 
Question 2
The alternative hypothesis, denoted by H_{0}, represents the status quo and involves stating the belief that the population parameter is, ≤, =, or ≥ a specific value.
True 

False 
Question 3
The null hypothesis is believed to be true unless there is overwhelming evidence to the contrary.
True 

False 
Question 4
A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam is equal to 45 minutes. The correct hypothesis statement would be _______________.
H_{0}: = 45; H_{1}: > 45 

H_{0}: = 45; H_{1} 45 
H_{0}:_{ } 45; H_{1}: = 45 

H_{0}: = 45; H_{1}: < 45 
Question 5
Black Diamond produces climbing equipment and would like to test whether a new steel carabiner has an average breaking strength greater than 25 Kn (kilonewtons). A Type II error would occur if the testers conclude that the average breaking strength is _____________________.
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn 

equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn 
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn 

less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn 
Question 6
When conducting a hypothesis test for the population mean when sigma is known and the sample size is 30 or more, the test statistic follows the ______________________
Student's tdistribution 

binomial distribution 
normal distribution 

exponential distribution 
Question 7
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The critical value for this hypothesis test would be _______.
2.05 

1.96 
1.645 

1.28 
Question 8
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The test statistic for this hypothesis test would be _______.
t = 1.89 

z = 1.70 
t_{ } = 2.06 

z = 2.23 
Question 9
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The conclusion for this hypothesis test would be that because the test statistic is ___________.
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes 

more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes 
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes 

less than the critical value, we can conclude that the average length of an online video is more than 8 minutes 
Question 10
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q1: What is the correct hypothesis statement?
H_{0} : $20 H_{1}: $20 

H_{0}: H_{1}: 
H_{0}: H_{1}: 
Question 11
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q2: What is the critical t value (tα)?
Question 12
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q3: What is the test statistic (tx‾) for this problem?
Question 13
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q4: Within what range does the pvalue for this problem lie?
0.10 and 0.20 

0.05 and 0.15 
0.10 and 0.35 

0.15 and 0.25 
Question 14
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q5: Because the pvalue ≥ α, we reject the null hypothesis. Therefore, the Department of Labor concludes there is not sufficient evidence to support the null hypothesis.
True 

False 
Question 15
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.The pvalue for this hypothesis test would be ____________.
Question 16
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.Which of the following statements is true?
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. 

Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. 
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. 

Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. 
a
Question 1
A hypothesis is an assumption about a population parameter such as a mean or a proportion.
True 

False 
Question 2
The alternative hypothesis, denoted by H_{0}, represents the status quo and involves stating the belief that the population parameter is, ≤, =, or ≥ a specific value.
True 

False 
Question 3
The null hypothesis is believed to be true unless there is overwhelming evidence to the contrary.
True 

False 
Question 4
A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam is equal to 45 minutes. The correct hypothesis statement would be _______________.
H_{0}: = 45; H_{1}: > 45 

H_{0}: = 45; H_{1} 45 
H_{0}:_{ } 45; H_{1}: = 45 

H_{0}: = 45; H_{1}: < 45 
Question 5
Black Diamond produces climbing equipment and would like to test whether a new steel carabiner has an average breaking strength greater than 25 Kn (kilonewtons). A Type II error would occur if the testers conclude that the average breaking strength is _____________________.
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn 

equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn 
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn 

less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn 
Question 6
When conducting a hypothesis test for the population mean when sigma is known and the sample size is 30 or more, the test statistic follows the ______________________
Student's tdistribution 

binomial distribution 
normal distribution 

exponential distribution 
Question 7
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The critical value for this hypothesis test would be _______.
2.05 

1.96 
1.645 

1.28 
Question 8
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The test statistic for this hypothesis test would be _______.
t = 1.89 

z = 1.70 
t_{ } = 2.06 

z = 2.23 
Question 9
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The conclusion for this hypothesis test would be that because the test statistic is ___________.
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes 

more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes 
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes 

less than the critical value, we can conclude that the average length of an online video is more than 8 minutes 
Question 10
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q1: What is the correct hypothesis statement?
H_{0} : $20 H_{1}: $20 

H_{0}: H_{1}: 
H_{0}: H_{1}: 
Question 11
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q2: What is the critical t value (tα)?
Question 12
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q3: What is the test statistic (tx‾) for this problem?
Question 13
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q4: Within what range does the pvalue for this problem lie?
0.10 and 0.20 

0.05 and 0.15 
0.10 and 0.35 

0.15 and 0.25 
Question 14
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q5: Because the pvalue ≥ α, we reject the null hypothesis. Therefore, the Department of Labor concludes there is not sufficient evidence to support the null hypothesis.
True 

False 
Question 15
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.The pvalue for this hypothesis test would be ____________.
Question 16
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.Which of the following statements is true?
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. 

Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. 
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. 

Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. 
a
Question 1
Question 1
A hypothesis is an assumption about a population parameter such as a mean or a proportion.
A hypothesis is an assumption about a population parameter such as a mean or a proportion.
True 

False 
True
False
True
True
True
True
False
False
False
False
Question 2
Question 2
The alternative hypothesis, denoted by H_{0}, represents the status quo and involves stating the belief that the population parameter is, ≤, =, or ≥ a specific value.
The alternative hypothesis, denoted by H_{0}, represents the status quo and involves stating the belief that the population parameter is, ≤, =, or ≥ a specific value. The alternative hypothesis, denoted by H_{0}, represents the status quo and involves stating the belief that the population parameter is, _{0}≤, =, or ≥ a specific value.
True 

False 
True
False
True
True
True
True
False
False
False
False
Question 3
Question 3
The null hypothesis is believed to be true unless there is overwhelming evidence to the contrary.
The null hypothesis is believed to be true unless there is overwhelming evidence to the contrary.
True 

False 
True
False
True
True
True
True
False
False
False
False
Question 4
Question 4
A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam is equal to 45 minutes. The correct hypothesis statement would be _______________.
A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam is equal to 45 minutes. The correct hypothesis statement would be _______________.
H_{0}: = 45; H_{1}: > 45 

H_{0}: = 45; H_{1} 45 
H_{0}: = 45; H_{1}: > 45
H_{0}: = 45; H_{1} 45
H_{0}: = 45; H_{1}: > 45
H_{0}: = 45; H_{1}: > 45
H_{0}: = 45; H_{1}: > 45
H_{0}: = 45; H_{1}: > 45 H_{0}: _{0} = 45; H_{1}: _{1} > 45
H_{0}: = 45; H_{1} 45
H_{0}: = 45; H_{1} 45
H_{0}: = 45; H_{1} 45
H_{0}: = 45; H_{1} 45 H_{0}: _{0} = 45; H_{1} _{1} 45
H_{0}:_{ } 45; H_{1}: = 45 

H_{0}: = 45; H_{1}: < 45 
H_{0}:_{ } 45; H_{1}: = 45
H_{0}: = 45; H_{1}: < 45
H_{0}:_{ } 45; H_{1}: = 45
H_{0}:_{ } 45; H_{1}: = 45
H_{0}:_{ } 45; H_{1}: = 45
H_{0}:_{ } 45; H_{1}: = 45 H_{0}:_{ }_{0}_{ } 45; H_{1}: _{1} = 45
H_{0}: = 45; H_{1}: < 45
H_{0}: = 45; H_{1}: < 45
H_{0}: = 45; H_{1}: < 45
H_{0}: = 45; H_{1}: < 45 H_{0}: _{0} = 45; H_{1}: _{1} < 45
Question 5
Question 5
Black Diamond produces climbing equipment and would like to test whether a new steel carabiner has an average breaking strength greater than 25 Kn (kilonewtons). A Type II error would occur if the testers conclude that the average breaking strength is _____________________.
Black Diamond produces climbing equipment and would like to test whether a new steel carabiner has an average breaking strength greater than 25 Kn (kilonewtons). A Type II error would occur if the testers conclude that the average breaking strength is _____________________.
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn 

equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn 
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn
equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn
greater than 25 Kn when, in reality, the average breaking strength is less than or equal to 25 Kn
equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn 

less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn 
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn
less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn
less than 25 Kn when, in reality, the average breaking strength is not equal to 25 Kn
less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
less than equal to 25 Kn when, in reality, the average breaking strength is greater than 25 Kn
Question 6
Question 6
When conducting a hypothesis test for the population mean when sigma is known and the sample size is 30 or more, the test statistic follows the ______________________
When conducting a hypothesis test for the population mean when sigma is known and the sample size is 30 or more, the test statistic follows the ______________________
Student's tdistribution 

binomial distribution 
Student's tdistribution
binomial distribution
Student's tdistribution
Student's tdistribution
Student's tdistribution
Student's tdistribution
binomial distribution
binomial distribution
binomial distribution
binomial distribution
normal distribution 

exponential distribution 
normal distribution
exponential distribution
normal distribution
normal distribution
normal distribution
normal distribution
exponential distribution
exponential distribution
exponential distribution
exponential distribution
Question 7
Question 7
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The critical value for this hypothesis test would be _______.
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The critical value for this hypothesis test would be _______. YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The critical value for this hypothesis test would be _______.
2.05 

1.96 
2.05
1.96
2.05
2.05
2.05
2.05
1.96
1.96
1.96
1.96
1.645 

1.28 
1.645
1.28
1.645
1.645
1.645
1.645
1.28
1.28
1.28
1.28
Question 8
Question 8
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The test statistic for this hypothesis test would be _______.
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The test statistic for this hypothesis test would be _______. YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The test statistic for this hypothesis test would be _______.
t = 1.89 

z = 1.70 
t = 1.89
z = 1.70
t = 1.89
t = 1.89
t = 1.89
t = 1.89 t = 1.89
z = 1.70
z = 1.70
z = 1.70
z = 1.70 z = 1.70
t_{ } = 2.06 

z = 2.23 
t_{ } = 2.06
z = 2.23
t_{ } = 2.06
t_{ } = 2.06
t_{ } = 2.06
t_{ } = 2.06 t_{ } = 2.06
z = 2.23
z = 2.23
z = 2.23
z = 2.23 z = 2.23
Question 9
Question 9
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The conclusion for this hypothesis test would be that because the test statistic is ___________.
YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The conclusion for this hypothesis test would be that because the test statistic is ___________. YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The conclusion for this hypothesis test would be that because the test statistic is ___________.
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes 

more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes 
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
more than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes 

less than the critical value, we can conclude that the average length of an online video is more than 8 minutes 
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is not more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is more than 8 minutes
less than the critical value, we can conclude that the average length of an online video is more than 8 minutes
Question 10
Question 10
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10. The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q1: What is the correct hypothesis statement?
Q1: What is the correct hypothesis statement?
H_{0} : $20 H_{1}: $20 

H_{0}: H_{1}: 
H_{0} : $20
H_{1}: $20
H_{0}:
H_{1}:
H_{0} : $20
H_{1}: $20
H_{0} : $20
H_{1}: $20
H_{0} : $20
H_{0} : $20H_{0} : _{0} $20
H_{1}: $20
H_{1}: $20 H_{1}: _{1} $20
H_{0}:
H_{1}:
H_{0}:
H_{1}:
H_{0}:
H_{0}: _{0}
H_{1}:
H_{1}: _{1}
H_{0}: H_{1}: 
H_{0}:
H_{1}:
H_{0}:
H_{1}:
H_{0}:
H_{1}:
H_{0}:
H_{0}: _{0}
H_{1}:
H_{1}: _{1}
Question 11
Question 11
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q2: What is the critical t value (tα)?
Q2: What is the critical t value (tα)?Q2: What is the critical t value (tα)?
Question 12
Question 12
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q3: What is the test statistic (tx‾) for this problem?
Q3: What is the test statistic (tx‾) for this problem?Q3: What is the test statistic (tx‾) for this problem?
Question 13
Question 13
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q4: Within what range does the pvalue for this problem lie?
Q4: Within what range does the pvalue for this problem lie?
0.10 and 0.20 

0.05 and 0.15 
0.10 and 0.20
0.05 and 0.15
0.10 and 0.20
0.10 and 0.20
0.10 and 0.20
0.10 and 0.20
0.05 and 0.15
0.05 and 0.15
0.05 and 0.15
0.05 and 0.15
0.10 and 0.35 

0.15 and 0.25 
0.10 and 0.35
0.15 and 0.25
0.10 and 0.35
0.10 and 0.35
0.10 and 0.35
0.10 and 0.35
0.15 and 0.25
0.15 and 0.25
0.15 and 0.25
0.15 and 0.25
Question 14
Question 14
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.The next group of questions will pertain to the following setup. The Department of Labor would like to test the hypothesis that the average hourly wage for recent college graduates is less than $20. A random sample of 24 recent college graduates averaged $19.30 per hour with a standard deviation of $3.20 per hour. The Department of Labor would like to set α = 0.10.
Q5: Because the pvalue ≥ α, we reject the null hypothesis. Therefore, the Department of Labor concludes there is not sufficient evidence to support the null hypothesis.
Q5: Because the pvalue ≥ α, we reject the null hypothesis. Therefore, the Department of Labor concludes there is not sufficient evidence to support the null hypothesis.Q5: Because the pvalue ≥ α, we reject the null hypothesis. Therefore, the Department of Labor concludes there is not sufficient evidence to support the null hypothesis.
True 

False 
True
False
True
True
True
True
False
False
False
False
Question 15
Question 15
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.The pvalue for this hypothesis test would be ____________.
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.The pvalue for this hypothesis test would be ____________. The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.The pvalue for this hypothesis test would be ____________.
Question 16
Question 16
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.Which of the following statements is true?
The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.Which of the following statements is true? The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set α=0.05.Which of the following statements is true?
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. 

Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. 
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. Because the pvalue is greater than , we reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years. Because the pvalue is greater than , we fail to reject the null hypothesis and cannot conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. 

Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. 
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years. Because the pvalue is less than , we fail to reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.Because the pvalue is less than , we reject the null hypothesis and conclude that the average age of cars on the road is less than 12 years.
a
a