SOLUTION: in a family of two children,find the probability that the family has two boys given that the first child is boy?

Algebra ->  Probability-and-statistics -> SOLUTION: in a family of two children,find the probability that the family has two boys given that the first child is boy?       Log On


   



Question 792476: in a family of two children,find the probability that the family has two boys given that the first child is boy?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
in a family of two children,find the probability that the family has two boys given that the first child is boy?
-------
P(bb |b) = 1/2
----------------------
Why?? If 1st is a boy the possibilities are bb or bg.
So P(2nd is b when 1st is b) = 1/2
-----------------------------------------------
Cheers,
Stan H.