1. state the null hypothesis and alternative hypothesis. Identify the claim

2. Identify the test statistic to be used and state a level of significance, a

3. Compute the test statistic

4. Formulate the decision rule and state the finding. Make a decision.

An exercise therapist measured the heart rates of 15 randomly selected patients. The patients were then placed on a running program and their heart rates were measured again after a week. The results are as follows: Pat len 1 2 4 5 9 10 11 12 13 14 15 t Bef 68 76 74 71 71 72 75 83 75 74 76 77 78 75 75 ore Aft 67 77 74 74 69 70 71 77 71 74 73 68 71 72 77 er