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A woman has two kids. One is a boy. What are the odds the other is a boy?

Poll: What are the odds?
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100%
1.15%
 1 1.15%
50%
79.31%
 69 79.31%
33%
16.09%
 14 16.09%
25%
3.45%
 3 3.45%
Total 87 vote(s) 100%
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A woman has two kids. One is a boy. What are the odds the other is a boy?
Beaner
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#56
2009-03-12, 03:49 PM
it is called independent assortment in genetics. each child has a 50% chance of being a boy or a girl independently of the the previous offsprings. the chance is 50% of the second being a boy.

-- l X l Y
X l XX l XY
---------------
X l XX l XY

as you can see each child has a 50% chance of being boy or girl. and the result of baby 1 doesnt affect the chances of baby numero dos.

bio class dismissed
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A woman has two kids. One is a boy. What are the odds the other is a boy? - by Beaner - 2009-03-12, 03:49 PM

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