Applied Statistics and Probability for Engineers, 4th edition
Errata
December 17 2007
1st Printing
Chapter 2
Page 31, exercise 2-49, should be used in Section 2-4
Page 54, exercise 2-109, change grammar from “A sample is…” to “Sample are …”
Page 61, exercise 2-134, line 2, change “call” to “calls”
Chapter 5
Page 164, exercise 5-5, change the probability of moderate distortion to 0.04, this value is
used in the answers to exercises
Chapter 6
Page 209, exercise 6-21, change the sum in the table from 4403.92 to 4393.8. Do not use
the sum as an observation. There are only 23 observations.
Chapter 8
Page 276, exercise 8-34 should be deleted
Chapter 9
Page 305, exercise 9-27, change “at least 60%” to “more than 60%” to express the
alternative hypothesis as H1: p > 0.60
Page 307, table at bottom of page, remove n – 1 subscripts
Page 326, table at bottom of page, remove n – 1 subscripts
Chapter 10
Page 354, exercise 10-9 part (e), the exercise is not paired, so part (e) should be deleted
Page 364, exercise 10-15, part (b), Change 95% to 99% to correspond to = 0.01 in part
(a)
Page 364, exercise 10-16, part (c), Reword to “If the mean deflection temperature for
type 1 pipe exceeds that of type 2 by … “
Chapter 12
Page 470, exercise 12-47 (a) Make plural as “Find 95% confidence coefficients on the
…”
Page 476, exercise 12-64, change PPG to PPGF
Chapter 15
Page 630, last line before Example 15-5, should refer to Table IX
Chapter 14
Page 580, exercise 14-20, in the table the label “ – “ under “Factor Levels” should be
moved one column to the right
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Chapter 16
Page 679, exercise 16-36, part (a), remove the “?” at the end of the line
Page: 2
Page 688, line 14, spelling error in “collected”
Appendix B Answers to Selected Exercises
2-109 (a) 0.00307 (b) 0.04096 (Correction NOT in original solutions)
4-39 (d) 1/3
5-19 (c) 0.790
8-11 (b) [74.035, ∞)
8-45 ≤ 0.0122
8-65 Correct label of interval to 99%CI = [2.81, 2.99]
9-71 (a) Change 79.49 to 71.42
9-75 (b) 0.45 (c) n = 30
9-79 (b) 0.7969 < p
9-119 (a) Change 2.059 to 2.056
9-123 (c) d = 0.71, 30 ≤ n
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10-41 Replace 0.22 2 with 1 / 2 2.20
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10-85 0.519 ≤ ≤ 3.887
11-79 (c) Change f0 = 2555263.9 to f0 = 252263.9 (Correction NOT in original solutions)
(d) [1.5367, 1.5509]
(e) t0 = –199.34, reject H0
12-35 (b) 158 .815 Y | x 220 .127 (c) 126 .064 y 0 252 .878
0
12-47 (a) Round off error correction:
10 .18 0 16 .62 , 1.00 3 1.45, 3.85 7 5.00 , 5.11 10 3.07
(c) [81.3, 82.9]
12-67 (b) f0 = 1858613, reject H0
15-1 (a) P-value = 2P(R+ 8 | p = 0.5) = 0.1
16-9* control limits were obtained from an estimate of obtained from the pooled
standard deviation from each subgroup (Minitab default choice). The charts that estimate
from the average range are slightly different.
16-47* if the moving range from only the first 15 observations is used to determine the
control limits both observations 19 and 20 are out of control.
Page 739, exercise 5-77, answer for part (f) should be before part (g)
Page 741, Section heading 9-3 should be before exercise 9-45
Page 742, Section heading 10-3 should be before exercise 10-11
Page 747, Section heading 14-7 needed before exercise 14-35
Page 748, Section heading for Supplemental Exercises needed before exercise 15-33
*Denotes comments helpful to students/instructors, not a change to the book
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