Question: Cigarettes 99 confidence n 25 s 0 24 mg Use

Cigarettes 99% confidence; n = 25, s = 0.24 mg.
Use the given information to find the number of degrees of freedom, the critical values X2L and X2R, and the confidence interval estimate of s. The samples are from Appendix B and it is reasonable to assume that a simple random sample has been selected from a population with a normal distribution.

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