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The are 100 coins, 40 of them fair and 60 of the biased. A fair con...

The are 100 coins, 40 of them fair and 60 of the biased. A fair con lands head with probability 1/2 and a biased coin lands head with probability 2/3.

(a) If you choose a coin at random what is the probability that it lands head?

(b) If a randomly selected coin lands head then what is the probability that it is a biased coin?

Math   Statistics-And-Probability   
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