Empirical rule for statistics students

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For the normal distribution curve with mean of 19 and a standard deviation of 6, which range of the variable shows 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

Reference no: EM1391828

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