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Opinion polls find that 20% of Americans adults claim that they dont get enough sleep.Suppose you take a random sample of 200 American adults and

Opinion polls find that 20% of Americans adults claim that they dont get enough sleep.Suppose you take a random sample of 200 American adults and count the numberXin your sample that claim that they never have time to relax.

The mean ofXis

Select one:

a. 32

b. 160

c. 40

d. 168

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