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August 29, 2015

Homework Help: statistics

Posted by G. on Thursday, June 19, 2008 at 5:19am.

Does lovastatin 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. 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 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?

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