Question 1

You hypothesize that more than 60% of dentists will prefer Crest toothpaste over a leading competitor. You survey a sample of dentists. You should use a ___________ to analyze your data.

Group of answer choices

One-sample test (one-sided)

One-sample test (two-sided)

Two-sample test (one-sided)

Two-sample test (two-sided)

Question 2

You want to determine if there is a difference in preference for smoked vs. grilled ribs among male and female Memphians. An appropriate test to analyze data collected to test this hypothesis would be a ______________.

Group of answer choices

One-sample Z test

Chi-squared test

McNemar's test

Question 3

You want to determine if a dietary intervention changes affect job satisfaction. You collect data on a sample of individuals and record their job satisfaction (satisfied vs. dissatisfied) both prior to and after the dietary intervention. You analyze your data using a _____________, finding a p-value of p=0.043. You _________ the null hypothesis and conclude that _______________.

Group of answer choices

Chi-squared test, reject, the dietary intervention is associated with a change in job satisfaction rate

Chi-squared test, fail to reject, the dietary intervention is not associated with a change in job satisfaction rate

McNemar's test, the dietary intervention is associated with a change in job satisfaction rate

McNemar's test, fail to reject, the dietary intervention is not associated with a change in job satisfaction rate

Question 4

You want to determine if body composition affects job satisfaction. You collect data on samples of individuals classified as obese (BMI > 30) and non-obese (BMI < 30) and record the proportions who rate the job satisfaction as satisfied vs. dissatisfied. You analyze your data using a _____________, finding a p-value of p=0.843. You _________ the null hypothesis and conclude that _______________.

Group of answer choices

Chi-squared test, reject, obesity status is associated with job satisfaction

Chi-squared test, fail to reject, obesity status is not associated with job satisfaction

McNemar's test, obesity status is associated with job satisfaction

McNemar's test, fail to reject, obesity status is not associated with job satisfaction