Let P ( A ) = 0.5, P ( A ∩ B ) = 0.2 and P ( A | B ) = 0.5.
Determine P ( B ) = (as a decimal) and P ( A ∪ B )
= (as a decimal)
Three identical light bulbs are connect in parallel. If the
probability of the system to operate normally is 99.2%, determine
the probability of each light bulb to fail p = (as a
decimal).