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A coin-operated soft drink machine was designed to dispense 7 ounces of beverage per cup. To test the machine, 21 cupfuls were drawn and measured.

A coin-operated soft drink machine was designed to dispense 7 ounces of beverage per cup. To test the machine, 21 cupfuls were drawn and measured. The mean and standard deviation of the sample were found to be 6.93 and 0.22 ounces respectively. Find the 99% confidence interval for the mean quantity of beverage dispensed by the machine.

Enter theupper limitof the confidence interval you calculated here with 2decimal places:

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