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A soft-drink machine is designed to discharge, when operating properly, at most 20 ounces of beverage...

A soft-drink machine is designed to discharge, when operating properly, at most 20 ounces of beverage per cup with a standard deviation of 2.1 ounces. To check the machine reliability, a random sample of 25 cupfuls is selected. Compute the power of the test if the true (actual) population average amount dispensed is 21.6 ounces per cup. Use a = 0.0294.

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