When the sample size and the sample proportion remain the same,a 90 percent confidence interval for a population proportion p will be ______________ the 99 percent confidence interval for p.
A) wider than
B) narrower than
C) equal to

Question

Quizplus · Accepted Answer

A 90 percent confidence interval is narrower than a 99 percent confidence interval because a lower confidence level requires less margin for error.

When the Sample Size and the Sample Proportion Remain the Same,a