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If nequals400 and Xequals80​, construct a 95​% confidence interval estimate of the population proportion. nothingless than...

If nequals400 and Xequals80​, construct a 95​% confidence interval estimate of the population proportion. nothingless than or equalspiless than or equals nothing ​(Round to four decimal places as​ needed.)

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Answer #1

Given that, n = 499 and x = 80

=> sample proportion = 80/400 = 0.2

A 95% confidence level has significance level of 0.05 and critical value is,

The 95% confidence interval estimate of the population proportion is,

ANSWER : 0.1608 ≤ p ≤ 0.2392

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