Question

1. Zachary thinks that taking pets for a walk decreases people’s heart rate over time. He has his participants take a baseline heart rate and then has them walk their dogs for three days. He then has the same participants take their resting heart rate.

Participant	Baseline	Post Walk
1	75	71
2	66	66
3	57	55
4	64	66
5	67	60
6	77	74
7	70	73
8	71	70
9	76	72
10	80	77
11	76	74
12	79	79

1. Using mathematical notation what are the null and alternative hypotheses for this study? (1 point).

2. Compute the appropriate test statistic for testing the hypothesis (5 points).

3. Using  = .05, what do you conclude about the effects of dog walking on heart rate? Be sure to provide the critical value in your answer (1.5 points).

Answer 1