# Probability : Bayes' Rule

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An ectopic pregnancy is twice as likely to develop when the pregnant woman is a smoker as it is when she is a nonsmoker. If 32 percent of women of childbearing age are smokers. What percentage of women having ectopic pregnancies are smokers?

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##### Solution Summary

Bayes' rule is used to solve a probability problem. The solution is detailed and well presented.

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We must use the Bayes rule:

P(smoker|ectopic)= ...

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