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Statistics in business

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Please solve the problem using the 5 step procedure for hypothesis testing.

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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