A food manufacturer claims that at the time of purchase by
Chapter 8, Problem 8.2.12(choose chapter or problem)
A food manufacturer claims that at the time of purchase by a consumer the average age of its product is no more than 120 days. In an experiment to test this claim a random sample of 36 items are found to have ages at the time of purchase with a sample mean of x =122.5 days and a sample standard deviation of s =13.4 days. With this information how do you feel about the manufacturers claim?
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