Thirteen tons of cheese, including "22-pound" wheels (label weight), is stored in some old gypsum mines.  A random sample of n = 9 of these wheels yielded the following weights in pounds. 21.50, 18.95, 18.55, 19.40, 19.15, 22.35, 22.90, 22.20, 23.10 Assuming the distributions of the weights of the wheels of cheese is N(mean(mu),standard deviation), find 95% confidence interval for mu.

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Chapter1: Combinatorial Analysis
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Thirteen tons of cheese, including "22-pound" wheels (label weight), is stored in some old gypsum mines.  A random sample of n = 9 of these wheels yielded the following weights in pounds.

21.50, 18.95, 18.55, 19.40, 19.15, 22.35, 22.90, 22.20, 23.10

Assuming the distributions of the weights of the wheels of cheese is N(mean(mu),standard deviation), find 95% confidence interval for mu.

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