Question 722990: Johnny says that if a family has two children, then. the only possibilities are two boys, two girls, or one boy and one girl. Because there are only three possibilities, Johnny claims the probability of having two boys is 1/3. Is Johnny correct? Why or why not?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Johnny says that if a family has two children, then. the only possibilities are two boys, two girls, or one boy and one girl. Because there are only three possibilities, Johnny claims the probability of having two boys is 1/3. Is Johnny correct? Why or why not?
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No.
The possible arrangements are:
bb ; bg ; gb ; gg
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Each has probability 1/4
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Cheers,
Stan H.
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