Question: Listed below are weights (grams) from a simple random sample of pennies produced after 1983 (from Data Set 40 Coin Weights in Appendix B). a.

Listed below are weights (grams) from a simple random sample of pennies produced after 1983 (from Data Set 40 “Coin Weights” in Appendix B).

Data Set 40: Coin Weights INDIAN PENNIES WHEAT PENNIES PRE-1983 PENNIES 3.0630

a. Use 1000 bootstrap samples to construct a 95% confidence interval estimate of σ.

b. How does the result compare to the confidence interval found in Exercise 14 in Section 7-3?

Data Set 40: Coin Weights INDIAN PENNIES WHEAT PENNIES PRE-1983 PENNIES 3.0630 3.1366 3.0487 3.0755 2.9149 3.1692 3.1358 3.0476 2.9753 3.1029 3.1582 3.0406 3.0762 3.0398 3.1043 POST-1983 PENNIES 2.5113 2.4907 2.5024 2.5298 2.4950 CANADIAN PENNIES PRE-1964 QUARTERS 6.2771 6.2371 6.1501 6.0002 6.1275 3.2214 3.2326 2.4662 2.8357 3.3189 POST-1964 QUARTERS 5.7027 5.7495 5.7050 5.5941 5.7247 DOLLAR COINS 8.1008 8.1072 8.0271 8.0813 8.0241

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