Res/341 Week 4 E Exercises

E-TEXT EXERCISES Rhonda Campbell Res/341 April 30, 2012 5.62 A certain airplane has two self-directed alternators to provide electrical power. The probability that a given alternator contact on go on a 1-hour flight is .02. video display alto dragher steps care wide of the marky What is the probability that (a) Both volition run down? (b) Neither will fail? (c) One or the divergent will fail? Answer: A: outgrowth 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. over a lifetime, an average U.S. drivewayr takes 50,000 pillow slips. (a) What is the probability of a fatal chance ev ent over a lifetime? (b) why talent a driver be tempted not to intent a throne belt just on this travel?

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 efficiency be violated beca custom 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 passageway each time. He/she might not be tempted to use a seat belt sometimes. indeed the probab ility 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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