<PRE><B>Question 549244</B>
 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?;;(0.02)^2
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(b)neither will fail?:: (0.98)^2
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(c) one of the other will fail?::: 1-[0.02^2+0.98^2]
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Cheers,
Stan H.
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