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Let X, Y and Z be three independent random variables such that E(X)=E(Y)=2E(Z)2 and E(X?)-E(Y²)-E(Z*)=10. Then Var(X+Y+Z) is equal to: 21 22

Let X, Y and Z be three independent random variables such that E(X)=E(Y)=2E(Z)2 and E(X?)-E(Y²)-E(Z*)=10. Then Var(X+Y+Z) is equal to: 21 22

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Let X, Y and Z be three independent random variables such that E(X)=E(Y)=2E(Z)2 and E(X?)=E(Y²)=E(Z*)=10. Then Var(X+Y+Z) is equal to: 21 22 24 None of the other options
Transcribed Image Text:Let X, Y and Z be three independent random variables such that E(X)=E(Y)=2E(Z)2 and E(X?)=E(Y²)=E(Z*)=10. Then Var(X+Y+Z) is equal to: 21 22 24 None of the other options
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