You are given two random variables X and Y. E(X) = 0.5, Var(X) = 2 E(Y) = 7, Var(Y) = 3.5 cov (X, Y) = -0.8 Find the variance of the random variable Z = 2X - 3Y

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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You are given two random variables X and Y.
E(X) = 0.5, Var(X) = 2
E(Y) = 7, Var(Y) = 3.5
cov (X, Y) = -0.8
Find the variance of the random variable Z = 2X - 3Y

 

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