Answered: Let Y, and Y2 be two random variables…

Let Y, and Y2 be two random variables such that E(Y1)=3, Var(Y1)=4, E(Y2)=2, Var(Y2)=9, Cov(Y1, Y2)=-5 The variance of (2Y1 -3Y2), Var(2Y1 -3Y2), is a. None of them b. 109 С. 25 d. 157 е. 73

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 21E

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Let Y, and Y, be two random variables such
that E(Y1)=3, Var(Y1)=4, E(Y2)=2, Var(Y2)=9,
Cov(Y1, Y2)=-5
The variance of (2Y1 -3Y2), Var(2Y1 -3Y2),
is
a. None of them
b. 109
С.
25
d. 157
е. 73

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