Does Lovastatin reduce the risk of heart attack?
Does Lovastatin reduce the risk of heart attack? In texas study, researchers gave lovastatin to 2,325 people and an inactive substitute to 2081 people. After 5 years, 57 of the patients 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 doctors need to know before prescribing the drug widely?