QUESTION 1

We're trying to show that the average age of college students is greater than 19. Would this be an example of point or interval estimation?

A. Point

B. Interval

QUESTION 2

We'll use to make inferences about P.

A. True

B.False

QUESTION 3

We'll useto make inferences about

A. True

B.False

QUESTION 4

We're trying to show that the true percent of people who had twins is less than 20%. Which test should we use?

A. t-test

B. z-test

C. confidence interval for

D. confidence interval for P

QUESTION 5

When should a hypothesis test be used over a confidence interval?

A. When we want a range of possible values

B. When we want to show that a parameter is less/greater/not equal to a value

C. Both a and b

D. None of the above