Homework Help: statistics

Posted by johnprabhakaran on Tuesday, November 15, 2011 at 7:21am.

Ram earned a score of 940 on a national achievement test. The mean test score was 850 with a standard deviation of 100.what proportion of student had a higher score than Ram?(Assume that test scores are normally distributed)

statistics - PsyDAG, Wednesday, November 16, 2011 at 11:44am
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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