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The Empirical Rule For Statistics Students

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October 5th, 2022

For a normal distribution curve with a mean of 19 and a standard deviation of 6, which range of the variable defines an area under the curve corresponding to a probability of approximately 99.7%?

a. from 1 to 37
b. from 13 to 25
c. from 19 to 31
d. from 7 to 31

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