Explore BrainMass

Statistics - Hypothesis - P Value

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

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?

© BrainMass Inc. brainmass.com March 21, 2019, 5:33 pm ad1c9bdddf

Solution Summary

A complete, neat and step-by-step solution to the hypothesis testing is provided in the attached file.