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4. (5pts) You have three coins A, B, andC. The coin A is fair. The probability...

4. (5pts) You have three coins A, B, andC. The coin A is fair. The probability that a head willshowwhenB istossedis 2 3,whileitis 1 3 inthecaseofthecoinC. Acoinischosenat random and tossed 3 times giving 2 heads and 1 tail. Find the probability that the coin A waschosen.

Could you provide me the detailed process of this question. And what formula you are using for?

Math   Statistics-And-Probability   
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