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Claim that the mean is the same before and after the viewing

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Ten different families are tested for the number of gallons of water a day they use before and after viewing a conservation video. At the 0.05 significance level, test the claim that the mean is the same before and after the viewing. Before  33  33  38  33  35  35  40  40  40 31 After    34  28  25  28  35  33  31  28  35 33

Reference no: EM131822153

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