Suppose a 90% confidence interval for the mean time it takes to serve a customer at a drive-in bank is 120 seconds to 220 seconds. In repeated sampling 90% of the intervals constructed using the appropriate formula will contain the actual mean time.

Question

Quizplus · Accepted Answer

This statement accurately describes the interpretation of a 90% confidence interval. In repeated sampling, if we were to construct 100 intervals, we would expect 90 of them to contain the true population mean.

Suppose a 90% Confidence Interval for the Mean Time It