If (X_{1}) has mean 8 and variance 2 while (X_{2}) has mean -12.5 and variance 2.25 ,

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If $X_{1}$ has mean 8 and variance 2 while $X_{2}$ has mean -12.5 and variance 2.25 , and the two are independent, find

(a) $E\left(X_{1}-X_{2}\right)$;

(b) $\operatorname{Var}\left(X_{1}-X_{2}\right)$.

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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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If (X_{1}) has mean 8 and variance 2 while (X_{2}) has mean -12.5 and variance 2.25 ,

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Probability And Statistics For Engineers

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