Question: 26. Appendix B Data for Weights of Quarters Refer to Data Set 14 in Appendix B and use the sample data. a. Construct a 99%

26. Appendix B Data for Weights of Quarters Refer to Data Set 14 in Appendix B and use the sample data.

a. Construct a 99% confidence interval estimate of the standard deviation of weights of quarters made after 1964.

s.

s.

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b. Construct a 99% confidence interval estimate of the standard deviation of weights of silver quarters made before 1964.

c. Compare and interpret the results.

7-5 BEYOND THE BASICS

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