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____

- Statistics -
**economyst**, Monday, October 26, 2009 at 11:46am
I think you need to provide more information. Or you need to make some strong assumptions about how often a "not regular" attends (e.g., 50% of the time??)

- Statistics -
**Courtney**, Sunday, November 1, 2009 at 3:51pm
Though I'm not 100%, I'm fairly certain you're in my class. This being said, anyone who reads this and intends to help, please understand that this information IS all that we have to work with.

- Statistics -
**Anonymous**, Tuesday, March 8, 2011 at 4:18pm
1. 39

2. 47

3. 33

## Answer This Question

## Related Questions

- statistics - A professor is interested in determining whether assigning ...
- Statistics - Exam Grades. A statistics professor is used to having a variance in...
- Probability - A college professor has been studying the relationship between the...
- statistics - In a large class, there were 220 students who wrote both the ...
- statistics - In a recent survey in a Statistics class, it was determined that ...
- Statistic - professor has found that the grades on a Statistics Exam are ...
- Statistics - An instructor hy pothesizes that the mean of the final ex am grades...
- statistics - A professor is interested in the relationship between the number ...
- elementary statistics - A statistics professor is used to having a variance in ...
- elementary statistics - A statistics professor is used to having a variance in ...

More Related Questions