Homework Help: statistics

Posted by Emily on Monday, October 24, 2011 at 2:28pm.

IQ scores are normally distributed and assume that the average IQ for all Economics majors is 108 with a standard deviation of 11. What percentage of Economics majors would have an IQ of more than 118?

statistics - PsyDAG, Tuesday, October 25, 2011 at 2:56pm
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 Z score.

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