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January 26, 2015

January 26, 2015

Posted by **Alica** on Thursday, March 18, 2010 at 4:45am.

(a) What average must you exceed to obtain an A?

(b) What average must you exceed to receive a grade of C or better?

(c) What average must you obtain to pass the course? (You'll need a D or better.)

- Statistics 250 -
**drwls**, Thursday, March 18, 2010 at 11:33amYou need to learn how to use a normal probability distribution curve, or tables. There is one at

http://psych.colorado.edu/~mcclella/java/normal/accurateNormal.html

I used it to get the following answers:

(a) A score = 75.3 or better

(b) C score or higher (top 71%) = 60.8

(c) Passing D score or higher (top 90%) = 54.7

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