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Box A contains five white marbles and six black marbles. Box B contains seven white marbles...

Box A contains five white marbles and six black marbles. Box B contains seven white marbles and three black marbles. An experiment consists of first selecting a marble at random from Box A. The marble is transferred to Box B and then a second marble is drawn from Box B. What is the probability that the first marble was white given that the second marble was white? (Round your answer to three decimal places.)

I got .625 and got it wrong, not sure what I did wrong

Math   Statistics-And-Probability   
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