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answer this questions have cancer. The following table classifies people according to their smoking habits and whether or not they Smoker A Non-Smoker B Has

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have cancer. The following table classifies people according to their smoking habits and whether or not they Smoker A Non-Smoker B Has cancer C 20 5 Does not have cancer D 5 10 If an individual is selected at random from this group, find the probability that he/she is (a) a smoker and has cancer, 1/4 1/2 1/8 None of these 3/4 (b) has cancer given that he/she is a smoker. None of these 30/40 4/5 1/4 25/40

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