Answered: Let X and Y be any two random variables…

Let X and Y be any two random variables and let a and b be any two real numbers. Then var(ax + bY) = a?var (X) + b?var (Y) + 2ab cov(X,Y). False True

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section: Chapter Questions

Problem 56RE

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Question

Let X and Y be any two random variables and let a and b be any two real
numbers. Then
var(ax + bY) = a² var(X) + b?var(Y) + 2ab cov(X,Y).
False
True

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