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Conditional Probabilityeasy
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A biased 4-sided die has face probabilities P(1)=0.1P(1) = 0.1P(1)=0.1, P(2)=0.2P(2) = 0.2P(2)=0.2, P(3)=0.3P(3) = 0.3P(3)=0.3, and P(4)=0.4P(4) = 0.4P(4)=0.4. If the die is rolled and we are given that the result is an even number, what is the probability that it is a 4?