A local medical center has advertised that the mean wait for services will be less than 15 minutes. Given this claim, the hypothesis test for the population mean should be a one-tailed test with the rejection region in the lower (left-hand) tail of the sampling distribution.

Question

Quizplus · Accepted Answer

The claim is that the mean wait time is less than 15 minutes, which suggests a one-tailed test with the rejection region in the left tail to test if the mean is significantly lower than 15 minutes.

A Local Medical Center Has Advertised That the Mean Wait