Finding Critical Values and Confidence Intervals. In

Chapter 7, Problem 5

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Finding Critical Values and Confidence Intervals. In Exercises 58, use the giveninformation to find the number of degrees of freedom, the critical values X2L and X2R, andthe confidence interval estimate of s. The samples are from Appendix B and it is reasonableto assume that a simple random sample has been selected from a population with anormal distribution Nicotine in Menthol Cigarettes 99% confidence; n = 25, s = 0.24 mg.

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