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It is reported that the average weight of all newborns is 7.5 pounds. Here is a sample of 15 newborns in pounds: 8 9 9.5

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It is reported that the average weight of all newborns is 7.5 pounds. Here is a sample of 15 newborns in pounds: 8 9 9.5 8.25 9.5 Is there enough evidence at the 1% significance level to conclude that the average weight of a newborn is greater than 7.5 pounds

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