Thursday
December 18, 2014

Homework Help: Statistics

Posted by Jason L on Friday, February 23, 2007 at 4:24pm.

In a study that was highly published doctors discovered that aspirin helps prevent heart attacks. The research project which was scheduled to last 5 years employed 22,000 american physicians (all male). Half took an aspirin tablet 3 times a week while the other half took a placebo on the same schedule. After 3 years researchers determined that 104 of those who took aspirin and 189 of those who took placebo had heart attacks. Do the results indicate that aspirin is effective in reducing the incidence of heart attacks? Provide the test statistic and the critical value.

You might be able to use a proportional formula for a 2-sample z-test. Find the critical value using a z-table. Once you calculate the test statistic, compare the test statistic to the critical value. If the test statistic exceeds the critical value, you will reject the null hypothesis and conclude a difference. If the test statistic does not exceed the critical value, you cannot reject the null hypothesis.

I hope these few suggestions will help.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Stats - In a study that was highly published doctors discovered that aspirin ...
Statistics - Can somebody please help me get started on this problem? In a study...
Statistics - A survey claims that 9 out of 10 doctors recommend Aspirin for ...
Statistics - A clinic employs 9 physicians. 5 of the physicians are female. 4 ...
psy331 - Locate a scholarly, peer-reviewed journal article in the Ashford ...
Statistics - A Swedish study used 1360 patients who had suffered a stroke. The ...
Elementary Statistics need help ASAP - 2. A research team studied the ages of ...
statistics - In a study of the effect of college student employment on academic ...
Social Studies Aspirin Project - When/ where/ why was Aspirin invented? Who ...
statistics - based on the results below, how would you decribe the relationship ...

Search
Members