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
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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![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F770d4aaa-f68c-4c28-b892-89850a751ca6%2Fb833427c-2984-4fcb-8306-6677eb8a8b45%2Fuxfw7g8_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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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