Week 4 Exercises - Wk4 exercises 1 Week 4 Exercises Justin...

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Wk4 exercises 1 Week 4 Exercises Justin Grunigen RES341 Mark Talbot July 22, 2010
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Wk4 exercises 2 Week 4 Exercises 5.62 A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the other will fail? Show all steps carefully. The total probability must equal 1.0. The probability that one alternator will fail should equal the same as the probability that the other alternator will fail. This means each one has a probability to fail of 0.02. Multiply the probability of each alternator together for a combined total that both will fail of 0.0004. Therefore, the probability that neither will fail is 0.9604, and the probability that one will fail is (1-0.9604) is 0.0396 Alt 1 Alt 2 odds formula odds number fail fail 0.02*0.02 0.0004 fail not fail 0.02*0.98 0.0196 not fail fail 0.02*0.98 0.0196 not fail not fail 0.98*0.98
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Week 4 Exercises - Wk4 exercises 1 Week 4 Exercises Justin...

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