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Americans adults claim

Opinion polls find out that 20% of Americans adults claim that they don't get enough sleep. Assume you take the random sample of 200 American adults and count the number X in your sample that claim that they never have time to relax.

The standard deviation of X is

A. 5.66.

B. 6.32.

C. 32.

D. 40.

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Basic Statistics: Americans adults claim

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Recent Questions Asked Basic Statistics

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