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 camper entering the Luray caverns has Canadian license plates? At first I thought that it was (0.12)(0.28) but I was wrong. Any comments?
I think it is just 0.12 We do not have to factor in the probability for it being a camper because it is already given that it is a camper. So, the probability that it is a camper is 1.
In the book it was 9/28 but I do not know why...
we are looking for the intersection so let C stand for camper and P for Canadian plate so p(PintersectionC)=p (C/P)/p (C) now substitute 9/28=.3214285714
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