#### poisonroxs

##### New member

- Joined
- Apr 12, 2008

- Messages
- 12

A certain airplane has two independent alternators to provide elecrical 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?

A) P(x=2) .02*.02= .0004 or 4%

B) P(x=0) 1-0.02=.98

(.98*.98)= .09604 or 9.6%

C) P(x=1) 2(.98)(.02)=.0392 or 3.9%

Thanks for any input in advance )