Inactive Tutor answered • 05/20/16
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New to Wyzant
According to the empirical rule 68% of the numbers lie within 1 standard deviation of the mean. So take .68 times 1200.
Caden A.
asked • 05/20/16Standard deviation
set of data with 1200 numbers is normally distributedwith a mean of 27 and a standard deviation of 4. how many numbers in the data would you expect to be between 23 and 31?
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