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July 1, 2015

Homework Help: statistics

Posted by james akbar on Wednesday, February 29, 2012 at 6:23pm.

We have a group of 75 people and for their raw scores, you are given the Mean (M = 30) and variance (VAR = 16). Assuming a normal distribution of scores, what is the probability of randomly selecting a score between 27 and 31 for this group?

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