Suppose we have two urns, urn 1 and urn 2. urn 1 contains 3 red marbles and 5 white marbles. urn 2 contains 9 red marbles and 11 white marbles. the experiment consists of first choosing an urn with equally likely probability, and then drawing a marble from that urn. what is the probability of choosing urn 2 and a red marble?
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