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SCENARIO 7-7 A Recent Survey Revealed That American's Christmas Spending Averaged $830

Question 156

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SCENARIO 7-7
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. Random sample of size 100 are selected from
the population of American consumers.
-Referring to Scenario 7-7, the middle 90% of the sample mean spending will be bounded by
what two values?

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$ 793.81 a...

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