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Posted by **natasha** on Monday, November 7, 2011 at 10:00am.

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Generate a 95% confidence interval for the true mean total cholesterol leels in children.

- biostatistics -
**PsyDAG**, Monday, November 7, 2011 at 10:03am95% confidence interval = mean ± 1.96 SEm

SEm = SD/√n

Find the mean first = sum of scores/number of scores

Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

Standard deviation = square root of variance

I'll let you do the calculations.

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