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April 1, 2015

April 1, 2015

Posted by **Mike** on Monday, June 18, 2012 at 10:54pm.

- Statistics -
**MathGuru**, Tuesday, June 19, 2012 at 6:37pm95% confidence is two standard deviations about the mean.

Add 18.985 and 21.015 together, then divide by 2. This will be your mean.

Subtract 18.985 from the mean, then divide that result by 2. This will be your standard deviation.

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