A 95% confidence interval estimate for a population mean μ is determined to be 75 to 85.If the confidence level is reduced to 80%,the confidence interval for μ becomes wider.

Question

Quizplus · Accepted Answer

When the confidence level is reduced, the interval width becomes narrower, not wider. Therefore, the confidence interval for μ would become narrower, not wider, if the confidence level were reduced from 95% to 80%.

A 95% Confidence Interval Estimate for a Population Mean μ