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QUESTION
The U. Department of Agriculture reports that the mean American consumption of carbonated beverages per year is greater than 52 gallons.
The U.S. Department of Agriculture reports that the mean American consumption of carbonated beverages per year is greater than 52 gallons. A random sample of 30 Americans yielded a sample mean of 69 gallons. Assume that the population standard deviation is 20 gallons. Let the confidence level be 95%.
