Question

A study is designed to test H0: p = 0.50 against Ha: p > 0.50, taking a random sample of size n = 100, using significance level 0.05.
a. Show that the rejection region consists of values of p̂ 7 0.582.
b. Sketch a single picture that shows (i) the sampling distribution of p̂ when H0 is true and (ii) the sampling distribution of p̂ when p = 0.60. Label each sampling distribution with its mean and standard error, and highlight the rejection region.
c. Find P(Type II error) when p = 0.60.


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  • CreatedSeptember 11, 2015
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