?Large Data Sets from Appendix B. In Exercises 17 and 18, use the data set in Appendix
Chapter 7, Problem 18(choose chapter or problem)
Large Data Sets from Appendix B. In Exercises 17 and 18, use the data set in Appendix B. Assume that each sample is a simple random sample obtained from a population with a normal distribution.
Birth Weights Refer to Data Set 4 “Births” in Appendix B.
a. Use the 205 birth weights of girls to construct a 95% confidence interval estimate of the standard deviation of the population from which the sample was obtained.
b. Repeat part (a) using the 195 birth weights of boys.
c. Compare the results from part (a) and part (b).
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