# Question

Weights of dollar Coins 99% confidence; n = 20, s = 0.04111 g.

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.

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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