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To solve problems on this page, you should be familiar with uniform probability probability - by outcomes probability - rule of sum probability - rule of product. In the following probability problems, problems #1-3 function as a set, problems #4-5 are another set, and problems #6-7 are yet another set the scenarios are all.
Problem 1: out of 50 people surveyed in a study, 35 smoke in which there are 20 males what is the probability the if the person surveyed is a smoker then he is a male.
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