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SCENARIO 6-6 A Recent Survey Revealed That American's Christmas Spending Averaged $830

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SCENARIO 6-6
A recent survey revealed that American's Christmas spending averaged $830. Use this as the
population mean American's Christmas spending. Suppose American's Christmas spending is
normally distributed with a standard deviation of $220.
-Referring to Scenario 6-6, for a randomly chosen American, the probability is 0.9 that he/she
will spend at least how much on Christmas?

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