Consider a normally distribution population with known variance.The width of a 99% confidence interval for the population mean will be _______ the width of a 95% confidence interval for the population mean:
A)less than
B)equal to
C)greater than
D)4% larger than
E)4% smaller than

Question

Quizplus · Accepted Answer

The width of a 99% confidence interval is greater than the width of a 95% confidence interval because a higher confidence level requires a wider interval to ensure that it encompasses the population mean with greater certainty.

Consider a Normally Distribution Population with Known Variance