A system is made up of three components that operate independently from one another.
For the system to work, at least two components must work.
Suppose that: .
(a) What is the probability that the system works?
(b) Given that the system works, what is the probability that exactly two components work?
Numerator: .Exactly 2 components work:
Denominator, from (a): .
I hope this one is correct . . .