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December 20, 2014

December 20, 2014

Posted by **Komal** on Tuesday, October 23, 2012 at 4:23pm.

- stats -
**MathGuru**, Tuesday, October 23, 2012 at 6:29pmUse z-scores.

Determine the z-value using a z-table for the top 25%. Substitute the z into the formula, along with the mean and standard deviation. Solve for x.

Formula:

z = (x - mean)/sd

I hope this will help get you started.

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