(Answered) Question urn a has four red three blue and two green balls

Statistics

Question: Urn A has four red, three blue, and two green balls. Urn B has two red, three blue, and four green balls. A ball is drawn from urn A and put into urn B, and then a ball is drawn from urn B.

a. What is the probability that a red ball is drawn from urn B?

b. If a red ball is drawn from urn B, what is the probability that a red ball was drawn from urn A?

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