The questions below refer to the following situation:

A researcher wants to know if exercise increases a person's happiness. In the general population, a standardized inventory to measure happiness is normally distributed with = 57.9 and of 6.2. A person randomly selected from a group of volunteers is directed to exercise 60 minutes a day, five days a week for a month. At the end of the month, the person's happiness rating was 71.

What is the cutoff sample score on the comparison distribution at which the null hypothesis should be rejected with p<.05?