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OpenStudy (anonymous):
Suppose that there is a white urn containing 2 white balls and 1 red ball and there is a red urn containing 1 white ball and 3 red balls. an experiment consists of selecting at random a ball from the white urn and then (without replacing the first ball) selecting at random a ball from the urn having the color of the first ball. find the probability that the second ball is red.
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OpenStudy (mindblast3r):
33%
OpenStudy (mindblast3r):
I think
OpenStudy (anonymous):
the answer is 7/12 and you're supposed to draw a tree diagram to help you do it which i did but i don't know how to come up with the equation :/
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