Does lovastatin reduce the risk of heart attack? In Texas study, reseachers gave

Question

Does lovastatin reduce the risk of heart attack? In Texas study, reseachers gave lovastatin to 2325 people and an inactive substitute to 2,081 people (avg age 58). After 5 years, 57 of the lovastatin group had sullered a heart attack, compared with 97 for inactive pill. a) State the apporiate hypothesis. b) Obtain a test statistic and p-value. Interpret the results = .01.c) Is normality assures? d) Is the difference large enough to be important? e) What else would medical researchers need to know before prescribing this drug widely?

Explanation / Answer

Here p1 = X1/n1 =57/2325 = 0.0245
p2 = X2/n2 = 97/2081 = 0.0466
a) Null Hypothesis: Both the proportions are equal
Alternative Hypothesis: lovastatin a cholestrol lowering drugreduce heart attacks
The test statistic is given by

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.