Probality of understanding uncertainty

Reference no: EM13100704

Marie claims she can predict the sex of pregnant women's babies for first-time new mothers. She sees 1000 women a year, and she always predicts a female. She charges $1000 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 on her prediction of the sex of the second baby. Since the chance of having a female is approximately 50%, how can she earn any money?

Reference no: EM13100704

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