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April 18, 2014

Homework Help: Normal Probability Distribution

Posted by Angela on Saturday, May 14, 2011 at 12:50pm.

A professor at a local college noted that the grades of his students were normally distributed with an average percentage of 74 and a population standard deviation of 10. He found that 6.3% of his students received A's while 2.5% of his students failed the course and received F's. Based upon the professor's grading scale, what was the minimun percentage needed to get an A in the course?

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