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A library checks out an average of 334 books per day with a standard deviation of 73 books. The number of books checked out follows

A library checks out an average of 334 books per day with a standard deviation of 73 books. The number of books checked out follows an unknown distribution. Consider a random sample of 118 days of operation. Let X=X=the average number of books checked out per day over a selection of 118 days. XX~( , )

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