Wednesday

August 27, 2014

August 27, 2014

Posted by **Anonymous** on Sunday, June 23, 2013 at 10:31pm.

- math -
**Kuai**, Sunday, June 23, 2013 at 10:51pmz = (x -mean)/(sd/sqrt(n))

z = (90.8-88)/(10/sqrt(25))

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