Urn 1 has 5 white and seven black balls. Urn 2 has 3 white and12 black balls. We

Question

Urn 1 has 5 white and seven black balls. Urn 2 has 3 white and12 black balls. We flip a fair coin. if the outcome is heads, thena ball from urn is selected, while if the outcome is tails, then aball from urn 2 is selected. Suppose that a whiteball is selected.what is the probability that the coin landed tails. will give maximum stars (directly) for good explenation answer is also on this site, but i can't open it Urn 1 has 5 white and seven black balls. Urn 2 has 3 white and12 black balls. We flip a fair coin. if the outcome is heads, thena ball from urn is selected, while if the outcome is tails, then aball from urn 2 is selected. Suppose that a whiteball is selected.what is the probability that the coin landed tails. will give maximum stars (directly) for good explenation answer is also on this site, but i can't open it

Explanation / Answer

Urn 1 has 5 white and seven black balls. prob of white ball =5/12 Urn 2 has 3 white and 12 black balls. 3/12 Suppose that a white ball is selected. what is the probability thatthe coin landed tails. ok you know the prob for each urn, so to get a white ball the probis prob1+prob2= 8/12 prob of tails is (prob2)/prob of getting a white ball (3/12 ) / ( 8/12 ) = 3/8

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