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The distribution of the annual incomes of a group of middle management employees approximated a normal distribution with a mean of $38,710 and a standard deviation of $794. About 72 percent of the incomes lie between what two incomes?

$36,852 and $40,568
$36,652 and $40,768
$37,052 and $40,368
$37,852 and $39,568

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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