2. Suppose that Y is a binomial random variable based on n trials with success probability p and consider Y*=n-Y. a Argue that for y* = 0, 1,..., n P(Y* = y*) = P(n − Y = y*) = P(Y = n − y*). b Use the result from part (a) to show that n P(Y* = y*) = = (₁ " y₁) p^-' q²" = (".)q" p²-x. n-y* c The result in part (b) implies that Y* has a binomial distribution based on n trials and "success" probability p* = q = 1 - p. Why is this result "obvious"?
2. Suppose that Y is a binomial random variable based on n trials with success probability p and consider Y*=n-Y. a Argue that for y* = 0, 1,..., n P(Y* = y*) = P(n − Y = y*) = P(Y = n − y*). b Use the result from part (a) to show that n P(Y* = y*) = = (₁ " y₁) p^-' q²" = (".)q" p²-x. n-y* c The result in part (b) implies that Y* has a binomial distribution based on n trials and "success" probability p* = q = 1 - p. Why is this result "obvious"?
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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