A researcher wanted to compare food ratings at restaurants located in the city with those located in the suburbs. She randomly selected 50 urban and 50 suburban restaurants, collected data on food ratings at each of those restaurants, and conducted a 2-sample t-test. A p-value of .141 resulted. State the null and alternate hypotheses, state whether the null hypothesis should be rejected or not rejected and your reason for that conclusion, state the meaning of that conclusion specifically in terms of the problem being studied.

Nine experts rated four brands of Colombian coffee in a taste-testing experiment. A rating on a 7-point scale (1 = extremely unpleasing, 7 = extremely pleasing) was given for each of the four characteristics: taste, aroma, richness, and acidity. The ratings on the four characteristics were added for each brand of coffee to develop an overall rating for each of the 9 experts shown in the table below.

A researcher wanted to determine if the average waiting time at the emergency room in a local hospital is greater than 60 minutes. He randomly selected 15 patients at the emergency room facility and recorded their waiting times in minutes. A one sample hypothesis test for the mean was conducted with a resulting p-value of .0275. The researcher used a .01 level of significance for this test. State the null and alternate hypotheses, state whether the null hypothesis should be rejected or not rejected and your reason for that conclusion, state the meaning of that conclusion specifically in terms of the problem being studied.

USA Today reported on preferred types of office communication by different age groups. The results were based on a survey of 500 respondents in each age group. The results are cross-classified in the following table:

A researcher wanted to compare food ratings at restaurants located in the city with those located in the suburbs. She randomly selected 50 urban and 50 suburban restaurants, collected data on food ratings at each of those restaurants, and conducted a 2-sample t-test. A p-value of .141 resulted. State the null and alternate hypotheses, state whether the null hypothesis should be rejected or not rejected and your reason for that conclusion, state the meaning of that conclusion specifically in terms of the problem being studied.

Nine experts rated four brands of Colombian coffee in a taste-testing experiment. A rating on a 7-point scale (1 = extremely unpleasing, 7 = extremely pleasing) was given for each of the four characteristics: taste, aroma, richness, and acidity. The ratings on the four characteristics were added for each brand of coffee to develop an overall rating for each of the 9 experts shown in the table below.

A researcher wanted to determine if the average waiting time at the emergency room in a local hospital is greater than 60 minutes. He randomly selected 15 patients at the emergency room facility and recorded their waiting times in minutes. A one sample hypothesis test for the mean was conducted with a resulting p-value of .0275. The researcher used a .01 level of significance for this test. State the null and alternate hypotheses, state whether the null hypothesis should be rejected or not rejected and your reason for that conclusion, state the meaning of that conclusion specifically in terms of the problem being studied.

USA Today reported on preferred types of office communication by different age groups. The results were based on a survey of 500 respondents in each age group. The results are cross-classified in the following table:

A researcher wanted to compare food ratings at restaurants located in the city with those located in the suburbs. She randomly selected 50 urban and 50 suburban restaurants, collected data on food ratings at each of those restaurants, and conducted a 2-sample t-test. A p-value of .141 resulted. State the null and alternate hypotheses, state whether the null hypothesis should be rejected or not rejected and your reason for that conclusion, state the meaning of that conclusion specifically in terms of the problem being studied.

Nine experts rated four brands of Colombian coffee in a taste-testing experiment. A rating on a 7-point scale (1 = extremely unpleasing, 7 = extremely pleasing) was given for each of the four characteristics: taste, aroma, richness, and acidity. The ratings on the four characteristics were added for each brand of coffee to develop an overall rating for each of the 9 experts shown in the table below.

A researcher wanted to determine if the average waiting time at the emergency room in a local hospital is greater than 60 minutes. He randomly selected 15 patients at the emergency room facility and recorded their waiting times in minutes. A one sample hypothesis test for the mean was conducted with a resulting p-value of .0275. The researcher used a .01 level of significance for this test. State the null and alternate hypotheses, state whether the null hypothesis should be rejected or not rejected and your reason for that conclusion, state the meaning of that conclusion specifically in terms of the problem being studied.

USA Today reported on preferred types of office communication by different age groups. The results were based on a survey of 500 respondents in each age group. The results are cross-classified in the following table: