ch09b.pdf - (3 determine whether the response time is 0...

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(3) determine whether the response time is 0 minutes or not. (two tail test) H 0 : = H a : 0 The EMS director wants to perform a hypothesis test, with a .05 level of significance, to determine whether the service goal equals to 12 minutes or not. The response times for a random sample of 40 medical emergencies were tabulated. The sample mean is 10.75 minutes. The population standard deviation is believed to be 3.2 minutes. Example 1. Develop the hypotheses. 0
3. Compute the value of the test statistic.
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