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The amount of money PERs retirees earn a month vary according to a uniform? distribution, ranging from? $400 a month to? $8000 per month.??? ?E(X)

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The amount of money PERs retirees earn a month vary according to a uniform? distribution, ranging from? $400 a month to? $8000 per month.???

?E(X) =? $4200, SD(X)? = $2193.93

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