Fundamentals of Probability and Statistics for Engineers

(John Hannent) #1
CHAPTER 7

7.1 0.847

7.3 (a) 0.9, (b) 0.775
7.6 (a) 4. 566 10 3 , (b) 0.8944, (c) 0.383, (d) 0.385
7.9 X 2 is preferred in both cases
7.14 0.0062
7.20 (a) 0.221
(b)


7.22 0.153

7.30 (a) 0.056, (b) 0.989
7.34 0.125, 0, 0, 0.875. N o partial failure is possible
7.36


CHAPTER 8

8.2 (a) (i) Type-1 asymptotic maximum-value distribution is suggested
(ii) 0 .025, 46. 92
(d) (i) G amma is suggested, (ii)
(f) (i) Poisson is suggested, (ii)
(h) (i) N ormal is suggested, (ii)
(j) (i) Poisson is suggested, (ii)
(i) (i) Lognormal is suggested, (ii)


CHAPTER 9

9.1 1.75, 27.96

9.5 (a)


(c) 0.091, 0.91

Appendix C: Answers to Selected Problems 385


 

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