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Unformatted text preview: 107 Solutions to Exercises in Chapter 6 Solution to Exercise 6.1 (p. 99) a. N ( 66, 2.5 ) b. 0.5404 c. No d. Between 64.7 and 67.3 inches Solution to Exercise 6.3 (p. 100) a. N ( 36,10 ) b. 0.3446 c. 29.3 Solution to Exercise 6.5 (p. 100) a. the time (in hours) a 4yearold in China spends unsupervised per day b. N ( 3, 1.5 ) c. 0.0912 d. e. 2.21 hours Solution to Exercise 6.7 (p. 101) a. The duration of a criminal trial b. N ( 21, 7 ) c. 0.3341 d. 22.77 Solution to Exercise 6.9 (p. 101) a. The sample mean is 5.51 and the sample standard deviation is 2.15 e. N ( 5.51, 2.15 ) f. 0.6081 g. 0.64 Solution to Exercise 6.11 (p. 102) a. The sample mean is 60,136.4 and the sample standard deviation is 10,468.1. e. N ( 60136.4, 10468.1 ) f. 0.7440 g. 0.7167 Solution to Exercise 6.12 (p. 103) B Solution to Exercise 6.13 (p. 103) C Solution to Exercise 6.14 (p. 104) D Solution to Exercise 6.15 (p. 104) C Solution to Exercise 6.16 (p. 104) A Solution to Exercise 6.17 (p. 104) D 108 CHAPTER 6. THE NORMAL DISTRIBUTIONCHAPTER 6....
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 Fall '08
 Ripol
 Statistics, Normal Distribution, Standard Deviation, Mean

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