Question 180759This question is from textbook
: A couple plan to have exactly three children.
(a) Construct a tree diagram and list the sample space.
(b) Find the probability that the family has at least two girls
This question is from textbook
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A couple plan to have exactly three children.
(a) Construct a tree diagram and list the sample space.
1st column(root) has boy/girl
2nd column(branch) has boy/girl; boy/girl
3rd column(2nd branch) has boy/girl; boy/girl; boy/girl; boy/girl
----------------------------------------------------------------------
(b) Find the probability that the family has at least two girls
bgg, bgb, gbb, ggg
Probability = 4/8 = 1/2
===========================
Cheers,
Stan H.
|
|
|
