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Answer to Question #19456 in Statistics and Probability for Dianne

Question #19456
The quality control officer of a certain firm specializing in manufacturing female T-shirts of varing shoulder sizes wishes to find out the mean shoulder size of all the T-shirts produced. She takes a random of 150 T-shirts which gave a mean shoulder size of 16 inches and a standard deviation of 2 inches. Construct a 98% confidence interval for the mean shoullder size of all the T-shirts produced by the company.
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