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    Conditional Multivariate Probability

    So, I got this from my textbook and it makes sense: P_{Y|x}(y)= P(Y=y|X=x) = P_{X,Y}(x, y)/P_X(x) But I'm trying to apply it to this question and I'm struggling. Here's the question: Suppose a die is rolled six times. Let X be the total number of 4’s that occur and let Y be the number of 4’s...