Suppose we have four boxes. A, B, C and D containing coloured marbles as given below: One of the boxes has been selected at random and a single marble is drawn from it. If the marble is red, what is the probability that it was drawn from box A?, box B?, box C?

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Let R be the event of drawing the red marble. Let EA, EB, and EC respectively denote the events of selecting the box A, B, and C. Total number of marbles = 40 Number of red marbles = 15 Probability of drawing the red marble from box A is given by P (EA|R). Probability that the red marble is from box...
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Let R be the event of drawing the red marble. Let EA, EB, and EC respectively denote the events of selecting the box A, B, and C. Total number of marbles = 40 Number of red marbles = 15 Probability of drawing the red marble from box A is given by P (EA|R). Probability that the red marble is from box B is P (EB|R). Probability that the red marble is from box C is P (EC|R). read less
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