Question 1Select one answer. 10 pointsWe suspect the overall mean monthly rent of apartments in Shadyside is higher than in Oakland, so we survey a random sample of Oakland apartments, and a random sample of Shadyside apartments.(a)   matched pairs t-test(b)   two-sample t-test(c)   ANOVA(d)   chi-squared test for independence(e)   inference for regressionQuestion 2Select one answer.Question 1

Select one answer. 

10 points

We suspect the overall mean monthly rent of apartments in Shadyside is higher than in Oakland, so we survey a random sample of Oakland apartments, and a random sample of Shadyside apartments.

(a)   matched pairs t-test

(b)   two-sample t-test

(c)   ANOVA

(d)   chi-squared test for independence

(e)   inference for regression

Question 2

Select one answer. 

10 points

We suspect that automobile insurance premiums (in dollars) may be steadily decreasing with the driver's driving experience (in years), so we choose a random sample of drivers who have similar automobile insurance coverage and collect data about their ages and insurance premiums.

(a)   matched pairs t-test

(b)   two-sample t-test

(c)   ANOVA

(d)   chi-squared test for independence

(e)   inference for regression

Question 3

Select one answer. 

10 points

To test whether Internet use increases depression score, we measure the depression scores of a random sample of non-Internet-users, have them use the Internet for a specified time, then measure their depression scores again.

(a)   matched pairs t-test

(b)   two-sample t-test

(c)   ANOVA

(d)   chi-squared test for independence

(e)   inference for regression

Question 4

Select one answer. 

10 points

Researchers question whether college students' choice of declared academic major is related to gender. 

(a)   matched pairs t-test

(b)   two-sample t-test

(c)   ANOVA

(d)   chi-squared test for independence

(e)   inference for regression

Question 5

Select one answer. 

10 points

We want to test for a relationship between race and marital status (married/never married/divorced/widowed).

(a)   matched pairs t-test

(b)   two-sample t-test

(c)   ANOVA

(d)   chi-squared test for independence

(e)   inference for regression

The next three questions refer to the following information:

Suppose an economist wishes to determine the relationship between the age and price of houses. A study yields the following data:

 

For each question below, choose the most appropriate inference method to analyze these data, under the given scenarios.

Question 6

Select one answer. 

10 points

If column 1 is the price (in thousands of dollars) of a sample of five houses from ten years ago, and column 2 is the price (in thousands of dollars) of a sample of a different five houses from today, which of the following is the appropriate inference method?

(a)   matched pairs

(b)   two independent samples

(c)   inference for regression

Question 7

Select one answer. 

10 points

If column 1 is the age of the home in years, and column 2 is the price of the home (in thousands of dollars), which of the following is the appropriate inference method?

(a)   matched pairs

(b)   two independent samples

(c)   inference for regression

Question 8

Select one answer. 

10 points

If column 1 is the price (in thousands of dollars) of a sample of five houses from ten years ago, and column 2 is the price (in thousands of dollars) of the same homes today, which of the following is the appropriate inference method?

(a)   matched pairs

(b)   two independent samples

(c)   inference for regression