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A television documentary on overeating claimed that Americans are about 10 pounds overweight on average. To test this claim, eighteen randomly selected individuals were examined
A television documentary on overeating claimed that Americans are about 10 pounds overweight on average. To test this claim, eighteen randomly selected individuals were examined and their average excess weight was found to be 12.4 pounds, with a sample standard deviation of 2.7 pounds. At a significance level of 0.01 is there any reason to doubt the validity of the claimed 10 pound valve?
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