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Chapter 7: Q. 43 (page 441)

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

The sampling distribution of p^has mean

(a) 225.

(b) 0.30.

(c) 0.017.

(d) 0.

(e) none of these.

Short Answer

Expert verified

(b)渭p^=0.30

Step by step solution

01

Given Information 

Given

p=30%=0.30

n=750

02

Explanation

The population percentage pis equal to the mean of the sampling distribution of the sample proportionp^.

渭p^=p=0.30

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Most popular questions from this chapter

Tall girls Refer to Exercise 10.

(a) Make a graph of the population distribution.

(b) Sketch a possible graph of the distribution of sample data for the SRS of size 20 taken by the AP Statistics class.

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