What is the confidence interval for the true mean

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The analysis of a flue gas gives the following CO, volume content: 23.8, 23.4, 24.1, 24.6, 23.9, and 23.1. What is the confidence interval for the true mean for a probability level of 0.95 and 0.99? How much could the confidence range be improved if the number of analyses were doubled assuming the original distribution remained unchanged?

Reference no: EM131061289

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