The probability that a vehicle entering the Luray Caverns ha

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The probability that a vehicle entering the Luray Caverns has Canadian license plates is
0.12; the probability that it is a camper is 0.28; and the probability that it is a camper
with Canadian license plates is 0.09.What is the probability that
(a) a camper entering the Luray Caverns has Canadian license plates?
(b) a vehicle with Canadian license plates entering the Luray Caverns is a camper?
(c) a vehicle entering the Luray Caverns does not have Canadian plates or is not a
camper?

A :Camper
B :With Canadian license plates
By given hypothesis,P(A) = 0.28,P(B) = 0.12,P(A and B) = 0.09.
(a) 0.09.
(b) = P( A | B)
= P( A and B ) / P(B)
= 0.09 / 0.12
= 0.75
(c) = P( A' or B' )

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