A car rental agency is trying to make staffing plans. The early morning is always a busy

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A car rental agency is trying to make staffing plans. The early morning is always a busy time for rentals. The agency keeps track of the number of customers who pick up rental cars in the 8 A.M. to 10 A.M. period for a random sample of days.
Construct a 99% confidence interval for the average number of customers picking up rental cars in the 8 A.M. to 10 A.M. period.
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