Refer to the previous exercise. The output shows some results of using software to analyze the data with a significance test.
Paired T for Before€”After

T-Test of mean difference = 0 (vs not = 0):
T-Value = 6.93 P-Value = 0.020
a. State the hypotheses to which the reported P-value refers.
b. Explain how to interpret the P-value. Does the exercise program seem beneficial to lowering blood pressure?
c. What are the assumptions on which this analysis is based?

Transcribed Image Text:

Mean StDev SE Mean 8.660 5.774 2.887 Before After Difference 3 150.0 15. 130.0 10.0 20.0 5.0