Question 154392
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 = 0.0004
------------------------------------------
(b) Neither will fail?: (0.08)^2 = 0.0064
------------------------------------------
(c) one or the other will fail? : 1 - (0.0004 + 0.0064) = 1-0.0068
= 0.9932
==============
Cheers,
Stan H.