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August 29, 2015

Homework Help: Statistics

Posted by Carrie on Sunday, October 25, 2009 at 9:25pm.

A professor has noticed that, even though attendance is not a component of the final grade for the class, students that attend regularly generally get better grades. In fact, 39% of those who come to class on a regular basis receive A's. Only 14% who do not attend regularly get A's. The long run attendance rate is 81%. Based on this class profile find the following:
Hint: pretend that there are 1000 students in the class and use the values given in the problem to construct the appropriate contingency table. Round cell frequencies to the nearest integer
1) The percent who attend class regularly given that they get A's____

2) The odds that a person who attends regularly gets an "A" in the class___

3) The odds ratio of getting an A in the class for those attend regularly versus those who do not attend____

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