Problem 4 (1) For X k=0 Binomial(n,p), prove formally that E(X) = Σ‰± kP(X = k) = np and Var(X) = np(1 − p). (2) For T~ Geometric (p), prove E(T) = 1/p. ~

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Problem 4 (1) For X Binomial(n, p), prove formally that E(X) = Σ% kP(X = k) = np and
Var (X) = np(1 − p). (2) For T ~ Geometric(p), prove E(T) = 1/p.
Transcribed Image Text:Problem 4 (1) For X Binomial(n, p), prove formally that E(X) = Σ% kP(X = k) = np and Var (X) = np(1 − p). (2) For T ~ Geometric(p), prove E(T) = 1/p.
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