Saturday

February 28, 2015

February 28, 2015

Posted by **Darren** on Sunday, March 3, 2013 at 1:16pm.

- statistics -
**Dr. Jane**, Sunday, March 3, 2013 at 1:24pmYou need to find the z-score

(40 - 50)/10 = z

(60 - 50)/10 = z

So, you are looking for -1 and +1 standard deviations.

Find the area between -1 and +1 standard deviation by using a z-table or else by using the 65.. etc, rule.

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