Let (X_{1}, X_{2}, ldots, X_{20}) be independent and let each have the same marginal distribution with mean

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Let $X_{1}, X_{2}, \ldots, X_{20}$ be independent and let each have the same marginal distribution with mean 10 and variance 3. Find

(a) $E\left(X_{1}+X_{2}+\cdots+X_{20}\right)$;

(b) $\operatorname{Var}\left(X_{1}+X_{2}+\cdots+X_{20}\right)$.

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Probability And Statistics For Engineers

ISBN: 9780134435688

9th Global Edition

Authors: Richard Johnson, Irwin Miller, John Freund

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Question Posted: Apr 23, 2024 07:00 AM

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Let (X_{1}, X_{2}, ldots, X_{20}) be independent and let each have the same marginal distribution with mean

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Probability And Statistics For Engineers

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