Homework Help: statistics

Posted by Kelly on Sunday, December 18, 2011 at 8:29pm.

Scores on a certain nationwide college entrance examination follow a normal distribution with a mean of 400 and a standard deviation of 100. Find the probability that a student will score over 500.

statistics - PsyDAG, Monday, December 19, 2011 at 12:18pm
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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