When the sample size and sample standard deviation remain the same,a 99% confidence interval for a population mean,µ will be _________________ the 95% confidence interval for µ.
A)Wider than
B)Narrower than
C)Equal to

Question

Quizplus · Accepted Answer

A 99% confidence interval is wider than a 95% confidence interval because as the level of confidence increases, the margin of error also increases, resulting in a wider interval. The sample size and sample standard deviation remaining the same only means that the margin of error will not change, but the level of confidence being higher will increase the width of the interval.

When the Sample Size and Sample Standard Deviation Remain the Same,a