9) A drug company tested three formulations of a pain relief medicine for migraine headache sufferers. For the experiment 27 volunteers were selected and were randomly assigned to one of three drug formulations. The subjects were instructed to take the drug during their next migraine headache episode and to report their pain on a scale of 1 to 10 (10 being most pain). Use ANOVA at a = .05 to test for difference among the means. Show all work as done in class. 15 points Groups n Mean Variance Drug A 8 3.63 0.84 Drug B 9 5.78 2.19 Drug C 10 5.8 0.62 Grand Mean: x = 5.15 a) State the null and alternate hypotheses b) Identify d.f.N, d.f.D (use the value on table 7 closest to your value), and Fo c) Find MSB, MSw d) Find F e) Make decision and interpret results