1. The Emergency Medical Systems director wants to perform a test, with a .05 level of significance, to make sure the service goal of having an average response time is less than 12 minutes is valid.

The response times for a random sample of 36 medical emergencies were tabulated.The sample mean is 10.8 minutes.The population standard deviation is believed to be 3.6 minutes.

1.State the null and alternative hypotheses

2. The level of significance is .05 ( = .05)

3. Calculate the test statistic

4. Determine the p-value

5. State the decision and conclusion.

6. Interpret: