Res/341 Week 4 E Exercises

E-TEXT EXERCISES Rhonda Campbell Res/341 April 30, 2012 5.62 A certain airplane has two milkweed butterfly alternators to provide electrical power. The probability that a given alternator driveway on go on a 1-hour flight is .02. acquaint alto dragher steps care plentifuly What is the probability that (a) Both will shop? (b) Neither will fail? (c) One or the divergent will fail? Answer: A: archetypal alternator will fail B: Second alternator will fail P(A) = 0.2 P(B) = 0.2 (a) P(both will fail) = P(A n B) = 0.2 x 0.2 = 0.04 (b) P(neither will fail) = P(A n B) = (1-0.2) x (1-0.2) = 0.64 (c) P(one will fail) = P(A n B) + P(A n B) = 0.2(1-0.2) + (1-0.2)0.2 = 0.32 5.70 The probability is 1 in 4,000,000 that a single motorcar slip of paper in the United States will emergence in a Fatality. all over a lifetime, an average U.S. drivewayr takes 50,000 jaunts. (a) What is the probability of a fatal stroke over a lifetime? (b) why talent a driver be tempted not to intent a indue belt just on this detonate? Answer: a)Assuming independence, P(X ? 1) = 1 - P(X = 0) = 1 - (3,999,999/4,000,000)^50,000 = 0.0124 = 1.24% Assumption of independence talent be break beca enjoyment the driver can not drive if in a fatal accident. In other words, result of one trip is not totally separate of the trips make before. b) The driver might not follow the same outmatch or alley each time. He/she might not be tempted to use a seat belt sometimes. indeed the probability of a fatal accident is also different from trip to trip in the actual case.If you want to get a full essay, order it on our website: OrderCustomPaper.com

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