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December 21, 2014

December 21, 2014

Posted by **V** on Wednesday, November 7, 2012 at 4:00pm.

- statistics -
**MathGuru**, Wednesday, November 7, 2012 at 5:24pmUse z-scores:

z = (x - mean)/(sd/√n)

With your data:

z = (115 - 114)/(4.9/√7)

Finish the calculation.

Next, check a z-table to find probability using the above z-score.

I hope this will help get you started.

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