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December 20, 2014

December 20, 2014

Posted by **kasey** on Wednesday, March 4, 2009 at 9:55pm.

- statistics -
**MathGuru**, Wednesday, March 4, 2009 at 10:53pmUse this formula to find z:

z = (x - mean)/(sd/√n)

With your data:

z = (85.8 - 83)/(16/√64) = ?

Once you have the z-score, look at the z-table to determine your probability.

I hope this will help get you started.

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