- #1

navi

- 12

- 0

Homer watches Monday Night Football with a probability .6, he has pizza on Monday night with a probability .45, and he does both with probability .25. When you call him on Monday night, you learn that he is watching Monday Night Football. What is the probability that he is having pizza?

The answer is 5/12, I don't understand why :(

First of all, I do not understand how the probability of doing both is .25. Should it not be .6*.45? So, the formula should be for Probability of having pizza given that he is watching MNF, which would be: (.6*.45)/(.6*.45)+(.45*.4)... but I am obviously doing something wrong... :(