Consider a hypothetical town with population 10,000 in which a man is suspected of a crime. His blood matches a stain found at the scene some time after the crime was committed. 1% of the population will have matching blood. Because in this case the stain is somewhat degraded, the probability of getting a match even if the blood is identical is 0.95.
a) Draw a tree diagram of the different possibilities of the man being guilty or not and his blood matching or not.
I know how to do a tree diagram except the wording of this problem is a bit confusing. For the first branch would it be 0.95 for blood match, 0.05 blood not match and then what? :s please help.