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

Question

Quizplus · Accepted Answer

As the confidence level increases, the margin of error (which determines the width of the confidence interval) increases as well. Therefore, a 99 percent confidence interval will be wider than a 95 percent confidence interval, assuming the sample size and sample standard deviation remain the same.

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