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July 31, 2015

Homework Help: Statistics 250

Posted by Alica on Thursday, March 18, 2010 at 4:46am.

In a normal distribution, what z-score value separates the highest 90% of the scores from the rest of the distribution?
a)z = -1.28
b)z = 1.28
c)z = -0.13
d)z = 0.13

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