Find the percentage of sums between 15 standard deviations


Question: The distribution of results from a cholesterol test has a mean of 180 and a standard deviation of 20. A sample size of 40 is drawn randomly. Find the percentage of sums between 1.5 standard deviations below the mean of the sums and one standard deviation above the mean of the sums.

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Basic Statistics: Find the percentage of sums between 15 standard deviations
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