Posted by steven on .
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1hour fight 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

statistics 
bobpursley,
Pr(one)=.02
pr(both)=.02*.02
Pr(neither)=.98*.98
pr(one or other)=.02*.98+.98*.02