# Statistics-Researchers want to test a new anti-anxiety medication

3. Researchers
want to test a new anti-anxiety medication. They measure the anxiety of 36
participants on different dosages of the medication: 0mg, 50mg, and 100mg.
Participants are also divided based on what school they are attending, which
researchers hypothesize will also affect anxiety levels. Anxiety is rated on a
scale of 1-10, with 10 being “high anxiety” and 1 being “low anxiety”. Use
alpha = 0.05 to conduct your analysis.

4.
(a) Sales of Comfort brand headache medicine for the past ten weeks at Rosco
Drugs are shown below. If Rosco Drugs uses a 3-period moving average to
forecast sales, what is the forecast for Week 11?

at Terry’s Tie Shop can be viewed as falling into three distinct seasons: (1)
Christmas (November and December); (2) Father’s Day (late May to mid-June); and
(3) all other times. Average weekly sales (\$) during each of the three seasons
during the past four years are shown below. Determine forecasts for year 5.

5.
Using the data in the Table below, determine whether and how math test scores
differ by instructor, student IQ and motivation levels.

Fictional Math Test Scores by Teacher,
Student IQ, and Student Motivation.

6.
According to the leadership literature, there are a number of different
leadership styles. Listed below are scores obtained from an instrument designed
to measure a particular leadership style, which will be referred to as style X.
Of interest is whether X differs by school district type in terms of urbanity,
and by years of experience. A stratified random sample of school principals
were selected from three district types (mostly urban, mostly suburban, and
mostly rural). The scores on style X range from 100 to 0. The closer the score
to 100, the more the respondent conforms to style X, while the closer the score
to 0, the less the respondent conforms to style X.
Is
there any evidence that X differs among the three district types, once years of
experience is taken into account?

7.
A researcher is interested in learning whether frequency of reading at home to
elementary-aged children produces differential effects on reading achievement.
After obtaining information from a randomly selected sample of parents about
this behavior, the following classifications and standardized achievement
scores were recorded. (Note: frequency classifications as follows: a = less
than once per month, b = once to three times per month, c = more than three
family’s status concerning whether or not the family’s child receives either
free or reduced lunch is recorded as a proxy for SES. Also, students’ IQ scores
were recorded.

Is
frequency of reading at home related to student reading achievement once SES
and IQ are taken into account?

8.
An administrator wishes to know whether student behavioral problems can be
linked to student performance. If students were suspended or reprimanded more
than once, they are classified as having behavioral problems. In addition, each
student’s SES is known, and should be taken into account. The administrator
randomly selects 13 students and collects the appropriate data.

9.
Consider the following time series data.

Construct
a time series plot. What type of pattern exists in the data?

a.
Develop the three-week moving average forecasts for this time
series. Compute mean square error (MSE) and a forecast for week 8.

b.
Use smoothing constant (α) = .2 to compute the exponential
smoothing forecasts for the time series. Compute MSE and a forecast for week 8.

c.
Compare the three-week moving average approach with the exponential
smoothing approach using α = .2. Which appears to provide more accurate
forecasts based on MSE?

d.
Use a smoothing constant of α = .4 to compute the exponential
smoothing forecasts.
Does a smoothing constant of .2 or .4 appear to
provide more accurate forecasts based on MSE? Explain.

(ii)The values of Alabama building contracts
(in \$ millions) for a 12-month period follow.
240
350 230 260 280 320 220 310 240 310 240 230
a.
Construct a time series plot. What type of pattern exists in the data?

10. Martin Motors
has in stock three cars of the same make and model. The president would like to
compare the gas consumption of the three cars (labeled car A, car B, and car C)
using four different types of gasoline. For each trial, a gallon of gasoline
was added to an empty tank, and the car was driven until it ran out of gas. The
following table shows the number of miles driven in each trial.
Using the .05 level of significance:
a)
Is there a difference among types of gasoline?

b)
Is there a difference in the cars?

3. Researchers
want to test a new anti-anxiety medication. They measure the anxiety of 36
participants on different dosages of the medication: 0mg, 50mg, and 100mg.
Participants are also divided based on what school they are attending, which
researchers hypothesize will also affect anxiety levels. Anxiety is rated on a
scale of 1-10, with 10 being “high anxiety” and 1 being “low anxiety”. Use
alpha = 0.05 to conduct your analysis.

4.
(a) Sales of Comfort brand headache medicine for the past ten weeks at Rosco
Drugs are shown below. If Rosco Drugs uses a 3-period moving average to
forecast sales, what is the forecast for Week 11?

at Terry’s Tie Shop can be viewed as falling into three distinct seasons: (1)
Christmas (November and December); (2) Father’s Day (late May to mid-June); and
(3) all other times. Average weekly sales (\$) during each of the three seasons
during the past four years are shown below. Determine forecasts for year 5.

5.
Using the data in the Table below, determine whether and how math test scores
differ by instructor, student IQ and motivation levels.

Fictional Math Test Scores by Teacher,
Student IQ, and Student Motivation.

6.
According to the leadership literature, there are a number of different
leadership styles. Listed below are scores obtained from an instrument designed
to measure a particular leadership style, which will be referred to as style X.
Of interest is whether X differs by school district type in terms of urbanity,
and by years of experience. A stratified random sample of school principals
were selected from three district types (mostly urban, mostly suburban, and
mostly rural). The scores on style X range from 100 to 0. The closer the score
to 100, the more the respondent conforms to style X, while the closer the score
to 0, the less the respondent conforms to style X.
Is
there any evidence that X differs among the three district types, once years of
experience is taken into account?

7.
A researcher is interested in learning whether frequency of reading at home to
elementary-aged children produces differential effects on reading achievement.
After obtaining information from a randomly selected sample of parents about
this behavior, the following classifications and standardized achievement
scores were recorded. (Note: frequency classifications as follows: a = less
than once per month, b = once to three times per month, c = more than three
family’s status concerning whether or not the family’s child receives either
free or reduced lunch is recorded as a proxy for SES. Also, students’ IQ scores
were recorded.

Is
frequency of reading at home related to student reading achievement once SES
and IQ are taken into account?

8.
An administrator wishes to know whether student behavioral problems can be
linked to student performance. If students were suspended or reprimanded more
than once, they are classified as having behavioral problems. In addition, each
student’s SES is known, and should be taken into account. The administrator
randomly selects 13 students and collects the appropriate data.

9.
Consider the following time series data.

Construct
a time series plot. What type of pattern exists in the data?

a.
Develop the three-week moving average forecasts for this time
series. Compute mean square error (MSE) and a forecast for week 8.

b.
Use smoothing constant (α) = .2 to compute the exponential
smoothing forecasts for the time series. Compute MSE and a forecast for week 8.

c.
Compare the three-week moving average approach with the exponential
smoothing approach using α = .2. Which appears to provide more accurate
forecasts based on MSE?

d.
Use a smoothing constant of α = .4 to compute the exponential
smoothing forecasts.
Does a smoothing constant of .2 or .4 appear to
provide more accurate forecasts based on MSE? Explain.

(ii)The values of Alabama building contracts
(in \$ millions) for a 12-month period follow.
240
350 230 260 280 320 220 310 240 310 240 230
a.
Construct a time series plot. What type of pattern exists in the data?

10. Martin Motors
has in stock three cars of the same make and model. The president would like to
compare the gas consumption of the three cars (labeled car A, car B, and car C)
using four different types of gasoline. For each trial, a gallon of gasoline
was added to an empty tank, and the car was driven until it ran out of gas. The
following table shows the number of miles driven in each trial.
Using the .05 level of significance:
a)
Is there a difference among types of gasoline?

b)
Is there a difference in the cars?

3. Researchers
want to test a new anti-anxiety medication. They measure the anxiety of 36
participants on different dosages of the medication: 0mg, 50mg, and 100mg.
Participants are also divided based on what school they are attending, which
researchers hypothesize will also affect anxiety levels. Anxiety is rated on a
scale of 1-10, with 10 being “high anxiety” and 1 being “low anxiety”. Use
alpha = 0.05 to conduct your analysis.

4.
(a) Sales of Comfort brand headache medicine for the past ten weeks at Rosco
Drugs are shown below. If Rosco Drugs uses a 3-period moving average to
forecast sales, what is the forecast for Week 11?

at Terry’s Tie Shop can be viewed as falling into three distinct seasons: (1)
Christmas (November and December); (2) Father’s Day (late May to mid-June); and
(3) all other times. Average weekly sales (\$) during each of the three seasons
during the past four years are shown below. Determine forecasts for year 5.

5.
Using the data in the Table below, determine whether and how math test scores
differ by instructor, student IQ and motivation levels.

Fictional Math Test Scores by Teacher,
Student IQ, and Student Motivation.

6.
According to the leadership literature, there are a number of different
leadership styles. Listed below are scores obtained from an instrument designed
to measure a particular leadership style, which will be referred to as style X.
Of interest is whether X differs by school district type in terms of urbanity,
and by years of experience. A stratified random sample of school principals
were selected from three district types (mostly urban, mostly suburban, and
mostly rural). The scores on style X range from 100 to 0. The closer the score
to 100, the more the respondent conforms to style X, while the closer the score
to 0, the less the respondent conforms to style X.
Is
there any evidence that X differs among the three district types, once years of
experience is taken into account?

7.
A researcher is interested in learning whether frequency of reading at home to
elementary-aged children produces differential effects on reading achievement.
After obtaining information from a randomly selected sample of parents about
this behavior, the following classifications and standardized achievement
scores were recorded. (Note: frequency classifications as follows: a = less
than once per month, b = once to three times per month, c = more than three
family’s status concerning whether or not the family’s child receives either
free or reduced lunch is recorded as a proxy for SES. Also, students’ IQ scores
were recorded.

Is
frequency of reading at home related to student reading achievement once SES
and IQ are taken into account?

8.
An administrator wishes to know whether student behavioral problems can be
linked to student performance. If students were suspended or reprimanded more
than once, they are classified as having behavioral problems. In addition, each
student’s SES is known, and should be taken into account. The administrator
randomly selects 13 students and collects the appropriate data.

9.
Consider the following time series data.

Construct
a time series plot. What type of pattern exists in the data?

a.
Develop the three-week moving average forecasts for this time
series. Compute mean square error (MSE) and a forecast for week 8.

b.
Use smoothing constant (α) = .2 to compute the exponential
smoothing forecasts for the time series. Compute MSE and a forecast for week 8.

c.
Compare the three-week moving average approach with the exponential
smoothing approach using α = .2. Which appears to provide more accurate
forecasts based on MSE?

d.
Use a smoothing constant of α = .4 to compute the exponential
smoothing forecasts.
Does a smoothing constant of .2 or .4 appear to
provide more accurate forecasts based on MSE? Explain.

(ii)The values of Alabama building contracts
(in \$ millions) for a 12-month period follow.
240
350 230 260 280 320 220 310 240 310 240 230
a.
Construct a time series plot. What type of pattern exists in the data?

10. Martin Motors
has in stock three cars of the same make and model. The president would like to
compare the gas consumption of the three cars (labeled car A, car B, and car C)
using four different types of gasoline. For each trial, a gallon of gasoline
was added to an empty tank, and the car was driven until it ran out of gas. The
following table shows the number of miles driven in each trial.
Using the .05 level of significance:
a)
Is there a difference among types of gasoline?

b)
Is there a difference in the cars?

3. Researchers
want to test a new anti-anxiety medication. They measure the anxiety of 36
participants on different dosages of the medication: 0mg, 50mg, and 100mg.
Participants are also divided based on what school they are attending, which
researchers hypothesize will also affect anxiety levels. Anxiety is rated on a
scale of 1-10, with 10 being “high anxiety” and 1 being “low anxiety”. Use
alpha = 0.05 to conduct your analysis.

4.
(a) Sales of Comfort brand headache medicine for the past ten weeks at Rosco
Drugs are shown below. If Rosco Drugs uses a 3-period moving average to
forecast sales, what is the forecast for Week 11?

at Terry’s Tie Shop can be viewed as falling into three distinct seasons: (1)
Christmas (November and December); (2) Father’s Day (late May to mid-June); and
(3) all other times. Average weekly sales (\$) during each of the three seasons
during the past four years are shown below. Determine forecasts for year 5.

5.
Using the data in the Table below, determine whether and how math test scores
differ by instructor, student IQ and motivation levels.

Fictional Math Test Scores by Teacher,
Student IQ, and Student Motivation.

6.
According to the leadership literature, there are a number of different
leadership styles. Listed below are scores obtained from an instrument designed
to measure a particular leadership style, which will be referred to as style X.
Of interest is whether X differs by school district type in terms of urbanity,
and by years of experience. A stratified random sample of school principals
were selected from three district types (mostly urban, mostly suburban, and
mostly rural). The scores on style X range from 100 to 0. The closer the score
to 100, the more the respondent conforms to style X, while the closer the score
to 0, the less the respondent conforms to style X.
Is
there any evidence that X differs among the three district types, once years of
experience is taken into account?

7.
A researcher is interested in learning whether frequency of reading at home to
elementary-aged children produces differential effects on reading achievement.
After obtaining information from a randomly selected sample of parents about
this behavior, the following classifications and standardized achievement
scores were recorded. (Note: frequency classifications as follows: a = less
than once per month, b = once to three times per month, c = more than three
family’s status concerning whether or not the family’s child receives either
free or reduced lunch is recorded as a proxy for SES. Also, students’ IQ scores
were recorded.

Is
frequency of reading at home related to student reading achievement once SES
and IQ are taken into account?

8.
An administrator wishes to know whether student behavioral problems can be
linked to student performance. If students were suspended or reprimanded more
than once, they are classified as having behavioral problems. In addition, each
student’s SES is known, and should be taken into account. The administrator
randomly selects 13 students and collects the appropriate data.

9.
Consider the following time series data.

Construct
a time series plot. What type of pattern exists in the data?

a.
Develop the three-week moving average forecasts for this time
series. Compute mean square error (MSE) and a forecast for week 8.

b.
Use smoothing constant (α) = .2 to compute the exponential
smoothing forecasts for the time series. Compute MSE and a forecast for week 8.

c.
Compare the three-week moving average approach with the exponential
smoothing approach using α = .2. Which appears to provide more accurate
forecasts based on MSE?

d.
Use a smoothing constant of α = .4 to compute the exponential
smoothing forecasts.
Does a smoothing constant of .2 or .4 appear to
provide more accurate forecasts based on MSE? Explain.

(ii)The values of Alabama building contracts
(in \$ millions) for a 12-month period follow.
240
350 230 260 280 320 220 310 240 310 240 230
a.
Construct a time series plot. What type of pattern exists in the data?

10. Martin Motors
has in stock three cars of the same make and model. The president would like to
compare the gas consumption of the three cars (labeled car A, car B, and car C)
using four different types of gasoline. For each trial, a gallon of gasoline
was added to an empty tank, and the car was driven until it ran out of gas. The
following table shows the number of miles driven in each trial.
Using the .05 level of significance:
a)
Is there a difference among types of gasoline?

b)
Is there a difference in the cars?

### Related Questions

##### Assignment Research Method...

All written assignments and responses should follow APA rules for attributing sources.Imagine you were conducting research on the relationship betwe...

##### How are eating habits and attitudes scripted in ou...

Assignment: Consumption is a synonym for eating as well as a metaphor for thinking about our relationship to popular culture. Consumption can refer to...

##### Response needed...

200 words response needed asap  Sales professionals are constantly working to craft the perfect sales pitch that they can use from time and time....

##### Daisy Arabella...

Project 1 (1-2 pages) What are the employee workplace rights mandated by U.S. Federal law?Briefly discuss at least two controversial issues concernin...

##### THe election of Barack Obama...

"The Election of Barack Obama" Please respond to the following: Please respond in a primary posting of at least 200 words. In addition, please make...

##### Discussion 2, no plagiarism...

Your answers to each of these questions should be at least one paragraph (6-7 sentences) long, and it should show some thoughtful consideration regard...

##### Accident Investigation VII...

1) You recently completed an accident investigation involving a worker injured by an unguarded blade on a table saw. The investigation revealed that...

you are to write a 700 word paper discussing the benefits of telecommuting in the contemporary workplace. Please include at least three benefits for t...

##### Literature Review-Education...

I need 4-5 primary source research articles related to “How will implementing a consistent routine affect my students' behavior?” for this as...

##### NO PLAGIARISM PLEASE, DUE TUESDAY 03/17 BY 06:00PM...

You will conduct two interviews with practicing professionals in the field of law enforcement. These individuals may occupy positions in federal, stat...

##### PPT OSHA Standard...

The 2012 revision to the Hazard Communication Standard (HCS) requires that employers train workers on the GHScompliant hazard warning labels and safet...

##### 4 Q's Unit VII...

1) Your organization—a company that manufactures automobile brake pads—is about to introduce lean concepts into its operations in order to be mor...

##### Marketing Case Analysis 1.5-2 pages...

Please read the attached case for this E-commerce company in India, and answer the following questions separately:-What is the TECHNOLOGY potential of...

##### Discussion Question...

Research shows that the recidivism rate for convicted felons is about 67%. Imagine that you are a parole officer and that you carry a case load of 50...

##### First, complete the discussion board assignment fo...

Holocaust class. You are currently working on the two discussion questiions - I just posted those assignments yesterday. This assignment is TWO separa...

##### Ethics in Engineering...

Directions: Write a 4-page essay that addresses the following prompt by answering the questions as comprehensively as possible. Papers should be typ...

##### Week 3 computer forensics...

Week 3Recovering DataIn Fat 32 a 132 KB file uses how many sectors?List 2 features NTFS has the FAT does not.Describe a virtual cluster.Explain the...

##### Applying Social Psychology Concepts in Criminal Ju...

Select an article from a peer-reviewed journal in social psychology, criminal justice, or a related field. Topics may include the following: race rel...

https://www.youtube.com/watch?v=swHTmEXsCC4 Efficiency vs. effectiveness! Do you have similar experience in your everyday life that you are efficient...

##### m4a1...

Valuation of a firm’s financial assets is said to be based on what is expected in the future, in terms of the future performance of the firm, the in...

##### case study wk 3...

The case study (Coleen Colombo and Colleagues Resist Mortgage Fraud, will include a Synopsis and three Findings of Fact. Each Finding of Fact will req...

##### discussion Virtualization & memory...

Use the Internet and Library to research virtualization. Be prepared to discuss how virtualization works and the benefits that it offers.   V...

##### Cost and Equity Method, Consolidation: Advanced Ac...

Cost and Equity Method, Consolidation  What types of investments in common stock are accounted for using (a) the equity method and (b) the cost me...