Urn A has three red balls and two white balls, and urn B
Chapter , Problem 46(choose chapter or problem)
Urn A has three red balls and two white balls, and urn B has two red balls and five white balls. A fair coin is tossed. If it lands heads up, a ball is drawn from urn A; otherwise, a ball is drawn from urn B.
a. What is the probability that a red ball is drawn?
b. If a red ball is drawn, what is the probability that the coin landed heads up?
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