Thread: question about probability

There will be a party on thursday which be held outdoors if it does not rain. If it rains, it will be move on friday and held outdoors it it does not rain and indoors if it rains. What is the probability that it will be held outdoors if the probability of raining on thursday is 40% and the probability that it till not rain on friday if it rains on thursday is 60%

Originally Posted by FailCalculus

There will be a party on thursday which be held outdoors if it does not rain. If it rains, it will be move on friday and held outdoors it it does not rain and indoors if it rains. What is the probability that it will be held outdoors if the probability of raining on thursday is 40% and the probability that it till not rain on friday if it rains on thursday is 60%

Draw a tree diagram to see that the answer is (0.4)(0.6) + 0.6 = ....

thanks i got it. the answer is 0.84