APPENDIX C: ANSWERS TO SELECTED PROBLEMS
CHAPTER 2
2.1 (a) Incorrect, (b) Correct, (c) Correct, (d) Correct, (e) Correct,
(f) Correct
2.4 (a
(e)
2.7 (a)
(e)
(i)
2.9 (a)
2.11 (a) 0.00829, (b) 0.00784, (c) 0.00829
2.14 (a) 0.553, (b) 0.053, (c) 0.395
2.16 0.9999
2.18 (a) 0.8865, (b)
2.20 N o
2.22 No, (a) 0 .5, (b) Impossible
2.23 Under condition of mutual exclusiveness: (a) false, (b) true,
(c) false, (d) true, (e) false
Under condition of independence: (a) true, (b) false, (c) false,
(d) false, (e) true
2.24 (a) Approximately 10^5 , (b) Yes, (c) 0.00499
2.26 (a)
2.28 (a) 0.35, (b) 0.1225, (c) 0.65
2.30 (a) 0.08, (b) 0.375
2.32 (a) 0.351, (b) 0.917, (c) 0.25
2.34 (a) 0.002, (b) 0.086, (c) 0.4904
Fundamentals of Probability and Statistics for Engineers T.T. Soong 2004 John Wiley & Sons, Ltd
ISBN s: 0-470-86813-9 (H B) 0-470-86814-7 (PB)
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