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Use the mean and the standard deviation obtained from the last module and test the claim that the mean age of all books in the

Use the mean and the standard deviation obtained from the last module and test the claim that the mean age of all books in the library is greater than 2005. Share your results with the class. After post, please reply to two classmates.

when the mean is 1985. 67, SD is 9. 2 and the confidence interval is 4.33 years

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