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A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 12.5 pounds. A sample of seven infants is

A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 12.5 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 12.5 pounds. The null hypothesis is

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