osteoporosis is a condition in which people experiencedecreased bone mass and an increase in the risk of bone fracture.Actonel is a drug that helps combat osteoporosis in postmenopausalwomen. In clinical trials, 1374 postmenopausal women were randomlydivided into experimental and control groups. The subjects in theexperimental group were administered 5 milligrams of Actonal, whilethe subjects in the control group were administered a placebo. Thenumber of women who experienced a bone fracture over the course ofone year was recorded. Of the 696 women in the experimental group,27 experienced a fracture during the course of the year. Of the 678women in the control group, 49 experienced a fracture during thecourse of the year.
a. Does the sample evidence suggest the drug iseffective in preventing bone fractures? Use the × = 0.01 level ofsignificance.
b. Construct a 95% confidence interval for thedifference between the two population proportions, p exp - pcontrol.
