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QUESTION
Let X be the number of heads minus the number of tails obtained in n independent tosses of a fair coin. Find a formula for its probability function...
Let X be the number of heads minus the number of tails obtained inn independent tosses of a fair coin. Find a formula for its probability function andone for its distribution function.
The number of heads minus the numner of tails is binomial n ,0.5..The pdf is n choose x p^x(1-p)(1-q)The cdf is P(x=0)....+P(X=x)