Question 1

You hypothesize that individuals with BMI > 30 will have higher rates of heart disease than individuals with BMI < 30. You collect data on a large sample from the U.S. population. To analyze your data, you would use a ___________.

Group of answer choices

Two-sample test (one-sided)

Two-sample test (two-sided)

One-sample test (two-sided)

One-sample test (one-sided)

Question 2

You want to determine whether Memphians prefer Tops or Central barbecue and survey a sample of residents. To analyze your data, you would use a ___________.

Group of answer choices

One-sample test (two-sided)

One-sample test (one-sided)

Two-sample test (one-sided)

Two-sample test (two-sided)

Question 3

You hypothesize that more than half of college students prefer living on campus to living off campus. You collect a sample from your local college campus. To analyze your data, you would use a ___________.

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 4

You hypothesize that smokers have a higher rate of obesity than non-smokers. You collect samples of smokers and non-smokers and categorize them by obese (BMI > 30) or non-obese (BMI < 30) and test this using a two-sample Chi-squared test, which results in a p-value of p=0.622. You therefore __________ the null hypothesis and conclude that ________________. Hint: carefully consider your initial hypothesis.

Group of answer choices

reject; smokers have a different rate of obesity compared to non-smokers

reject; smokers have a higher rate of obesity compared to non-smokers

reject; smokers have a lower rate of obesity compared to non-smokers

fail to reject; smokers and non-smokers have the same obesity rate