Question: Letdenote a binomial random variable with parametersandso that P ( X ( n , p ) x ) = i = x n P (

Letdenote a binomial random variable with parametersandso that

P(X(n,p)x)=i=xnP(X=i)=i=xni!(ni)!)n!pi(1p)ni

If W=X(n+1,p) and Y=X(n,p) , explain whyWstY . A formal proof is not required.

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