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statistics  conditional probability
Event A has probability 0.9 of occurring. Event B has 0.2 chance of occurring if, and only if, event A has occurred. What is the overall probability that event B will occur? I'm so confused. This seems so simple, I'm not sure why
asked by Pam on September 26, 2013 
statistics  conditional probability
Event A has probability 0.9 of occurring. Event B has 0.2 chance of occurring if, and only if, event A has occurred. What is the overall probability that event B will occur? I'm so confused. This seems so simple, I'm not sure why
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