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October 21, 2014

Homework Help: business statistics

Posted by Julie on Sunday, February 20, 2011 at 7:40pm.

The scores on a standardized exam are normally distributed with mean= 50 and variance=16. (a) what percentage of the scores exceed 58? (b) what percentage of the scores lie between 38 and 54? (c) what is the 84th percentile of the distribution?

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