SOLUTION: 40% of all flights are made by airline A. 20% of all flights are made by airline B. 20% of all flights are made by airline C. Company A’s flights are late 5% of

Algebra ->  Probability-and-statistics -> SOLUTION: 40% of all flights are made by airline A. 20% of all flights are made by airline B. 20% of all flights are made by airline C. Company A’s flights are late 5% of       Log On


   

Question 904516: 40% of all flights are made by airline A. 20% of all
flights are made by airline B. 20% of all flights are made by
airline C. Company A’s flights are late 5% of the time. Company
B’s flights are late 9% of the time. Company C’s flights are
late 7% of the time. Company D’s flights are late 6% of the
time. There are only 4 airlines. If a randomly selected flight
is late, find the probability that it was a flight made by
company C.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p(late) = .40(.05) + .20(.09) + .20(.07) + .20(.06) compute and use below
P(A|B) = P(A and B)/P(B)
P(C|late) = .20(.07)/p(late)