Question

urn A contains 5 red marbles and 1 yellow marble. Urn b contains of 3 red...

urn A contains 5 red marbles and 1 yellow marble. Urn b contains of 3 red marbles and 7 yellow marbles. A marble is selected at random from urn A and put aside. If the marble is res, the. two marbles are selecred at random from Urn B (no replacements). If the marble is yellow, then three marbles are selected at random from Urn b (no replacement)
(a) what is the probability if selecting exaclty one yellow marble from urn b?
(b) what is the probability that the marble selected from Urn A was red given that exacly one marbel selected from Urn b was yellow?
Math   Statistics-And-Probability   
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