SOLUTION: 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

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Question 127279: 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?
Answer by stanbon(75887) About Me  (Show Source):
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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?
Prob(both fail) =0.2*0.2 = 0.04
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Prob(neither will fail) = 0.8*0.8 = 0.64
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Prob(one will fail) = 1-P(none will fail)-Prob(both will fail) = 1-0.68
= 0/32
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Cheers,
Stan H.