Homework Help: statistics

Posted by Kathleen on Monday, November 28, 2011 at 7:31pm.

a test has a mean score 73 with standard deviation of 12.students with scores greater than 85 recieve an A. What is the percent of the students would we expect to get an A? assume the normal distribution

statistics - PsyDAG, Tuesday, November 29, 2011 at 11:05am
Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score.

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