Researchers want to determine whether or not there is a difference in systolic blood pressure based on how many hours a person exercises per week. They divide a sample of 72 people into 3 groups based on how many hours they exercise per week. Group 1 exercises less than 2 hours per week, Group 2 exercises between 2 and 5 hours per week, and Group 3 exercises more than 5 hours per week. Researchers measure and record the systolic blood pressure for each participant. They choose α = 0.05 level to test their results. For your convenience, I have prepared an excel file with the data titled: data_homework10_BP groups. Use this data to run a One-way Anova. 1. What is the between groups degrees of freedom for this study?

a. 2
b. 3
c. 72
d. 69

2. This finding is statistically significant.

a. True
b. False

3. Based on this information, the researcher should make the decision to .

a. reject the null hypothesis
b. fail to reject the null hypothesis