10.8 In Relief from Arthritis published by Thorsons Publishers, Ltd., John E. Croft claims that over 40% of those who su

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10 8 In Relief From Arthritis Published By Thorsons Publishers Ltd John E Croft Claims That Over 40 Of Those Who Su 1 (356.83 KiB) Viewed 44 times

10.8 In Relief from Arthritis published by Thorsons Publishers, Ltd., John E. Croft claims that over 40% of those who suffer from osteoarthritis receive measur- able relief from an ingredient produced by a particular species of mussel found off the coast of New Zealand. To test this claim, the mussel extract is to be given to a group of 7 osteoarthritic patients. If 3 or more of the patients receive relief, we shall not reject the null hypothesis that p = 0.4; otherwise, we conclude that p < 0.4. а (a) Evaluate a, assuming that p=0.4. (b) Evaluate B for the alternative p=0.3.