1. Republicans are more politically conservative than others, on average. If Bob is at the 80th percentile of conservatism among all U.S. residents, then Bob's percentile of conservatism among Republicans would likely be ___.

a. less than the 80th percentile

b. at the 80th percentile

c. greater than the 80th percentile

1. There are 100 members of Group A, and each member has one test score; there are 100 members of Group B, and each member has one test score. The test scores for Group A follow a normal distribution and have a mean of 100 and a standard deviation of 6; the test scores for Group B follow a normal distribution and have a mean of 100 and a standard deviation of 12. Based on these statements, which ONE of the following statements is true?

a. It is more likely that a member of Group A has the lowest test score, and not a member of Group B.

b. It is more likely that a member of Group B has the lowest test score, and not a member of Group A.

c. The probability that a member of Group A has the lowest test score is the same as the probability that a member of Group B has the lowest test score.

1. Suppose that scores on a national test follow a normal distribution and have a mean of 100 and a standard deviation of 10. If Student A raises her score from 90 to 100, and Student B raises her score from 110 to 120, which of the following statements is true?

a. Student A had the higher percentile increase on the test.

b. Student B had the higher percentile increase on the test.

c. Student A had the same percentile increase on the test as Student B had.

1. For which of the following sets of seven coin flips would the p-value be lowest for a test of the null hypothesis that the coin is fair?

a. HHTTTTT

b. HHHTTTT

c. HHHHTTT

d. HHHHHTT

e. HHHHHHT

1. Suppose that, in a sample of students, we have a measure of how liberal a student is (which we will call L) and a measure of how strongly the student supports the Democratic Party (which we will call D). If, on average students who are more liberal more strongly support the Democratic Party, then L and D are ___.

a. positively correlated

b. negatively correlated

c. uncorrelated

1. uppose that a medical condition called m17 is distributed randomly among the U.S. population. It should be expected that, of the 20 U.S. counties with the highest per capita rate of m17, ___.

a. more of these 20 counties should be in the bottom half of county population size than in the top half of county population size

b. more of these 20 counties should be in the top half of county population size than in the bottom half of county population size

c. about the same number of these 20 counties should be in the top half of county population size as are in the bottom half of county population size