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Construct a 90​% confidence interval to estimate the population proportion with a sample proportion equal to...

Construct a 90​% confidence interval to estimate the population proportion with a sample proportion equal to 0.50 and a sample size equal to 150. What are the upper and lower limits?

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Answer #1

Z for 90% confidence interval = Z0.05 = 1.645

Confidence interval

                               

                               

                                = (0.433 , 0.567)

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