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October 23, 2014

Homework Help: statistics

Posted by VICTORIA on Friday, April 27, 2012 at 5:04pm.

assume adults have an IQ score that are normally distrubted with a mean of 105 and standard deviation of 20
A) find the percentage of adults that have an IQ between 94 and 116
B) find the percentage of adults IQ exceeding 120
C)Determine the 1st, 2nd, and 3rd quartiles for adults IQ
D) obtain the 95th percentile

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