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

Question

Quizplus · Accepted Answer

When the confidence level is reduced, the margin of error decreases accordingly, resulting in a narrower confidence interval. Therefore, the statement is true.

A 95% Confidence Interval Estimate for a Population Mean μ\muμ Is Determined to Be 75 to 85

A 95% Confidence Interval Estimate for a Population Mean $\mu$ Is Determined to Be 75 to 85