A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 23.1 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 21.1, 26.1, 27.1, 28.1, 25.1, 32.1, and 32.1 pounds. What are the degrees of freedom?   Multiple Choice   7   31.7   6   23.1

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