Suppose we know that X and Y are random variables with var(X) = 2, var(Y) = 3, and cov(X,Y)= -1. Find var (2X – Y). Round to 4 decimal places if needed.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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QUESTION 6
Suppose we know that X and Y are random variables with var(X) = 2, var(Y) = 3, and cov(X,Y) =
-1. Find var (2X – Y).
Round to 4 decimal places if needed.
Transcribed Image Text:QUESTION 6 Suppose we know that X and Y are random variables with var(X) = 2, var(Y) = 3, and cov(X,Y) = -1. Find var (2X – Y). Round to 4 decimal places if needed.
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