Marie claims she can predict the sex of pregnant women's babies
Marie claims
she can predict the sex of pregnant women's babies. She sees 1,000 women
a year, and she always predicts a female. She charges $1,000 for a
prediction, and she always predicts a female (although clients do not
know that). When she is wrong, she offers a double-your-money back
guarantee. Since the chance of having a female is approximately 50%, how
can she earn any money?
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