acesangel5301 acesangel5301

08-05-2018
Mathematics

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Assuming boys and girls are equally likely, find the probability of a couple having a baby boy boy when their fourth fourth child is born, given that the first three three children were all boys all boys.

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geerky42 geerky42

08-05-2018

I am assuming the gender of each child is independent of the other.

Then the information about the first three children is irrelevant.

So then the probability of fourth child being boy is 1/2, since boys and girls are equally likely.

Hope this helps.

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