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suppose a box contains three coins. two are fair and one is a coin with two...

suppose a box contains three coins. two are fair and one is a coin with two tails. a coin is randomly selected from the box and tossed once.

a) what is the probability that the result of the toss is a tail?

b) Given the result of the toss is a tail, what is the probability that the selected coin is the one with two tail?

Math   Statistics-And-Probability   
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