11-4. Let X be the amount of distillate per day (in pounds) produced by a chemical process...

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11-4. Let X be the amount of distillate per day (in pounds) produced by a chemical process at ACE Laboratories and suppose that X is approximately normally distributed. A sample of n = 10 consecutive days yielded the following amounts (in pounds): 2.3, 4.1, 5.6, 3.1, 4.0, 5.1, 2.7, 3.6, 4.2, and 5.9. Find the 95% confidence interval for the true average amount of distillate per day.

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