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eBook A sample of size 100 is selected from a population with p = .40. Use z-table. a. What is the expected value of p? b. Wh

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Answer #1

n = 100 ,p = 0.40

a)

E(p^) = p = 0.40

b)

standard error = sqrt(p(1-p)/n) = 0.049

c)

pbar follow normal distribution with mean = 0.4 and sd = 0.049

d)

sample proportion

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