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July 28, 2014

Homework Help: statistics

Posted by Robbie on Sunday, October 14, 2012 at 12:08am.

What z-score values form the boundaries for the middle 60% of a normal
distribution?
a. z = +0.25 and z = 0.25
b. z = +0.39 and z = 0.39
c. z = +0.52 and z = 0.52
d. z = +0.84 and z = 0.84

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