A 95 percent confidence interval for a mean will contain 95 percent of the population within the interval.

Question

Quizplus · Accepted Answer

A 95 percent confidence interval for a mean means that if we repeated the sampling process and created an interval estimate for each sample, then 95 percent of those intervals would contain the population mean. It does not necessarily mean that 95 percent of the population falls within that interval. The population mean is a single value and is not subject to being "contained" within an interval.

A 95 Percent Confidence Interval for a Mean Will Contain