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There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Math question.. plz me .. best answer all

Use a standard normal table to determine the probability. give your answer as a decimal to four decimal places. −1.5< < 1.5)