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September 15, 2014

September 15, 2014

Posted by **steven** on Tuesday, April 20, 2010 at 3:58pm.

- statistics -
**MathGuru**, Tuesday, April 20, 2010 at 7:27pmCI95 = mean + or - 1.96(sd divided by √n)

...where + or - 1.96 represents the 95% confidence interval using a z-table, sd = standard deviation, √ = square root, and n = sample size.

Substitute the values into the formula and calculate the interval.

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