Question: Decreasing the sample size from 750 to 375 would multiply the standard deviation by a. 2. b. 2 c. 1/2. (d)1/2. (e) none of these.

Decreasing the sample size from 750 to 375 would multiply the standard deviation by

a. 2.

b. √2

c. 1/2.

(d)1/√2.

(e) none of these.

The magazine Sports Illustrated asked a random sample of 750 Division I college athletes, “Do you believe performance-enhancing drugs are a problem in college sports?” Suppose that 30% of all Division I athletes think that these drugs are a problem. Let p̂ be the sample proportion who say that these drugs are a problem.

Select the best answer.

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