An article titled “The Effectiveness of Biofeedback and Home Relaxation Training on Reduction of Borderline Hypertension” (Health Education)

compared different methods of reducing blood pressure. Biofeedback (n  13 subjects), biofeedback/relaxation (n  15), and relaxation

(n  14) were the three methods compared. There were no differences among the three groups on pretest diastolic or systolic blood pressure readings.

There was a significant posttest difference between groups on the systolic measure, F(2, 39)  4.14, p  0.025, and diastolic measure, F(2, 39)  5.56, p  0.008.

a. Verify that df(method)  2 and df(error)  39.

b. Use Tables 9A, 9B, and 9C in Appendix B to verify that for systolic, p  0.025, and that for diastolic, p  0.008.