Mathematics, 19.09.2019 05:30, nat5841

Box a contains 1 black and 3 white marbles, and box b contains 2 black and 4 white marbles. a box is selected at random, then a marble is drawn at random from the selected box. given that the marble is black, find the probability that box a was chosen.

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Box a contains 1 black and 3 white marbles, and box b contains 2 black and 4 white marbles. a box is...