The manager of a health maintenance organization has set a target the mean waiting time of...

The manager of a health maintenance organization has set a target the mean waiting time of nonemergency patients to not exceed 30 minutes. In spot checks, manager finds the waiting times for 22 patients; the patients are selected randomly on different days. Assume that the population standard deviation of waiting times is 10 minutes. Suppose that sample mean waiting time is 38.1 minutes and test the claim at 2% SL. (Use one sided test). State clearly all 6 steps of the procedure (Ho, Ha, normal curve with RR and critical value of z), zs calculation, conclusion in terms of Ho).

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Expert Solution

Let denotes the mean waiting time of nonemergency patients.

There is not sufficient evidence to support the claim that the mean waiting time of nonemergency patients to not exceed 30 minutes.

orchestra answered 1 year ago

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