this should be an easy problem, but I can't work out the right answer for the life of me:
A couple decides to have children until they get a girl, but agree that they will not have more than 3 children, even if they are all boys. (assume boys and girls are equally likely)
What is a the probability of each outcome?
What is the expected number of children?
What is the expected number of boys?
What is the standard deviation of the number of kids?

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what are the possible outcomes?

oh i see your mistake
\[\frac{1}{2}\times \frac{1}{2}\times \frac{1}{2}=\frac{1}{8}\]

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