Suppose a candidate running for sheriff claims that she will reduce the average speed of emergency response to less than 30 minutes, which is thought to be the average responses time with the current sheriff. There are no past records, so, the actual standard deviation of response times cannot be determined. Thanks to this campaign, she is elected sheriff, and careful records are now maintained. The response times for the first month are 26, 30, 28, 29, 25, 28, 32, 35, 24, and 23 minutes.Using the .05 level of significance, is there a change in the response times with the new sheriff? Go through the steps of hypothesis testing.

Complete all 8 entries in the box below using complete sentences:

1. Null hypothesis:

2. Research hypothesis:

3. What is the mean of the comparison distribution?

4. What is the standard error (standard deviation) of the comparison distribution?

5. What is the cut-off score (critical value) for rejecting the null hypothesis?

6. Calculate the t-test (no need to show your calculations). Report the t-value and degrees of freedom in APA form:

7. What is your decision about whether or not to reject the null hypothesis?

8. Write one sentence to describe the findings of your analysis.