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- Jun 20, 2005
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One of the answers to a questions states " the formula for r sucesses out of n attempts is (nCr)(p^r)(q^n-r) .. What do these (nCr, etc.) stand for???
The queston was " what is the probability of 6 tails out of 9 tosses of a fair coin"
The queston was " what is the probability of 6 tails out of 9 tosses of a fair coin"
