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The Phillies were accused of cheating their beer customers by not putting enough beer in their 12 oz cups. When 15 cups were selected at random ,...

. The Phillies were accused of cheating their beer customers by not putting enough beer in their 12 oz cups. When 15 cups were selected at random , they were found to have a mean of 11.7 ounces with a standard deviation of 0.5 ounces. At the 01 significance level, test the claim that the customers are being cheated.

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