A baby is added to a hospital nursery. Before the baby was added there were two boys in the nursery and an uncounted number of girls. After the new baby is added a baby is selected at random among all the babies. The selected baby is a boy.
What is the probability that the added baby was a girl?
(In reply to
re(2): solution - different manner of looking at this by Charlie)
I'm familiar with Baye's theorem... it wasn't clear to me how you applied it... I musta been tired. :-)
And yup, it exactly corresponds to the leaves. Thanks!
re(3): solution - different manner of looking at this
