Mathematics, 16.03.2020 23:50 karen4764
Consider 5 boxes, each of which contains 4 balls; in particular, box 1 contains 4 white balls, box 2 contains 3 white balls and 1 red ball, box 3 contains 2 white balls and 2 red balls, box 4 contains 1 white ball and 3 red balls and box 5 contains 4 red balls. I choose a box at random and I extract 2 balls with replacement. Show that the probability that the 2 balls are red is equal to 3/8.
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Consider 5 boxes, each of which contains 4 balls; in particular, box 1 contains 4 white balls, box 2...
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