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Does lovastatin (a cholesterol lowering drug) reduce the risk of heart attack?

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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 (averge 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 from Science News 153, May30, 1998, p. 343)

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Solution Summary

This solution shows the hypothesis test for two independent proportions with a conclusion in an attached Word file.

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