suppose  the probablity of heads on a biased coin 1/3 the coin is flipped 7 times. define x as  the number of heads that appear p(x is at least 6)   p (x is at most 2) p ( x is no more than 5) p ( x is no less than 3) p( x is between 5 and 6 inclusive) p (x is between 3 ad 5 exclusive)

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