Kids again Find the standard deviation of the number of children the couple in Exercise 19 may have.
Exercise 19
Kids A couple plans to have children until they get a girl, but they agree that they will not have more than three children even if all are boys. (Assume boys and girls are equally likely.)
a) Create a probability model for the number of children they might have.
b) Find the expected number of children.
c) Find the expected number of boys they’ll have.
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