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January 25, 2015

January 25, 2015

Posted by **Anonymous** on Friday, October 1, 2010 at 4:06pm.

- statistics -
**TutorCat**, Friday, October 1, 2010 at 6:41pmfind the z-score:

z=(x-mu)/sigma

where mu= mean and sigma=standard deviation

after you find the z-score, you need to look at the z-score chart for the proportion

http://www.thebeststatistics.info/sta/table_zvals.html

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