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Question 2: The American Journal of Clinical Nutrition published the results of a study of the...

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Statistics

Question 2: The American Journal ofClinical Nutrition published the results of a study of the dietaryintake of sugar by children.

In the trial a sample of 657 randomly selected American childrenbetween the ages of 5 and 12 was chosen, and for each child a sevenday food diary was filled in. An analysis of the data showed asample mean of 134.3 g of sugar per day with a standard deviationof 48.1 g. Using the results from this sample, estimate the 68%,95%, and 99% confidence intervals for the mean daily sugar intakeof all American children (i.e., the population mean).

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