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    Statistics - Hypothesis - P Value

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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 (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 hypotheses.
    (b) Obtain a test statistic and p-value. Interpret the results at α = .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?

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    https://brainmass.com/statistics/hypothesis-testing/lovastatin-reduces-risk-heart-attack-224536

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