Suppose that of 1000 customers surveyed, 850 are satisfied or very satisfied with a corporations products and

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Suppose that of 1000 customers surveyed, 850 are satisfied or very satisfied with a corporation’s products and services.

(a) Test the hypothesis H0: p = 0.9 against H1:p ≠ 0.9 at α = 0.05. Find the P-value.

(b) Explain how the question in part (a) could be answered by constructing a 95% two-sided confidence interval for p.

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Applied Statistics And Probability For Engineers

ISBN: 9781118539712

6th Edition

Authors: Douglas C. Montgomery, George C. Runger

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