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April 21, 2014

April 21, 2014

Posted by **kinshassa** on Friday, July 22, 2011 at 1:15pm.

- statistics -
**MathGuru**, Friday, July 22, 2011 at 7:04pmUse z-scores and a z-table to find your probability.

Formula:

z = (x - mean)/sd

mean = 68

sd = 3

Find two z-values, using 67 and 69 for x.

Next, check a z-table for the probability between the two z-scores.

I hope this will help get you started.

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