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December 22, 2014

Homework Help: Probability

Posted by Sara Beth on Friday, November 16, 2012 at 11:22pm.

At a certain hospital, 40 patients have lung cancer, 30 patients smoke, and 25 have
lung cancer and smoke. Suppose the hospital has 200 patients. If a patient chosen at
random is known to smoke, what is the probability that the patient has lung cancer?

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