
In Exercises 5–8, use the relatively small number of given bootstrap samples to construct the confidence interval.
7. Freshman 15 Here is a sample of amounts of weight change (kg) of college students in their freshman year (from Data Set 6 “Freshman 15” in Appendix B): 11, 3, 0, −2, where −2 represents a loss of 2 kg and positive values represent weight gained. Here are ten bootstrap samples: {11, 11, 11, 0}, {11, −2, 0, 11}, {11, −2, 3, 0}, {3, −2, 0, 11}, {0, 0, 0, 3}, {3, −2, 3, −2}, {11, 3, −2, 0}, {−2, 3, −2, 3}, {−2, 0, −2, 3}, {3, 11, 11, 11}.
a. Using only the ten given bootstrap samples, construct an 80% confidence
b. Using only the ten given bootstrap samples, construct an 80% confidence interval estimate of the standard deviation of the weight changes for the population.

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Chapter 7 Solutions
Elementary Statistics (13th Edition)
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