SOLUTION: a coulpe plans to have 2 kids determine the possible arrangemnets of boys ang girls asuuming the boys and girld are equally likely draw a tree digram probability 2 girls atleas

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Question 381557: a coulpe plans to have 2 kids
determine the possible arrangemnets of boys ang girls
asuuming the boys and girld are equally likely draw a tree digram
probability 2 girls
atleast one girl
a girl then a boy
now i cam up with 4 possible arrangments
2 girls i got 1/4
at least ine girl 2/4
girl then a boy 1/4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
BG
BB
GG
GB
Those are the 4 possible combinations.
P%28GG%29=1%2F4, Good.
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At least one girl, there are 3 outcomes with at least one girl.
Two girls is also at least one girl.
P%281+G%29=3%2F4
You can also look at it this way.
At least one girl means no boys.
P(all boys)+P(not all boys)=1
P(at least 1 girl)=1- P(all boys)
P(at least 1 girl)=1-P%28BB%29
P(at least 1 girl)=1-1%2F4
P(at least 1 girl)=3%2F4
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P%28GB%29=1%2F4, Good.