SOLUTION: Does lovastatin(a cholesterol-lowering drug) reduce the risk of heart attack? In a Texas study, researchers gave lovastatin to 2,325 people and an inactive substitute to 2,081 peop
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Question 129078: Does lovastatin(a cholesterol-lowering drug) reduce the risk of heart attack? In a Texas study, researchers gave lovastatin to 2,325 people and an inactive substitute to 2,081 people(average age 58). After 5 years, 57 of the lovastatin group had suffered a heart attack, compared with 97 for the inactive pill. a) state the appropriate hypothesis. b) obtain a test statistic and p-value. Interpret the results at a=.01. c) Is normality assured? d) Is the difference large enough to be important? e)What else would medical researchers need to know before prescribing this drug widely? (Data are from Science News 153 [May 30, 1998],p. 343.) Answer by stanbon(75887) (Show Source):