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A coin is biased so that the head is 3 t...

A coin is biased so that the head is 3 times as likely to occuras tail. If the coin is tossed twice, find the probability distribution of number of tails .

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The correct Answer is:
`P(X= 2) P` (two tails)= `P{T} . P{T} = ((1)/(4))^(2) = (1)/(16)`
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