Let X and Y be two random variables, and r, t, s and u be constants. Which of the following are true? 1. Cov(X+s,Y+u) = Cov(X, Y 2. Cov(rx, tY)=rt Cov(X,Y) 3. Cov(rX+s,tY+u)=rt Cov(X,Y) a) O Only 1 b)...

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Let X and Y be two random variables, and r, t, s and u be constants. Which of the following are true?<br>1. Cov(X+s,Y+u) = Cov(X, Y<br>2. Cov(rx, tY)=rt Cov(X,Y)<br>3. Cov(rX+s,tY+u)=rt Cov(X,Y)<br>a) O Only 1<br>b) O None of them<br>c)O All of them<br>d) O 1 and 2<br>e) O 2 and 3<br>

Extracted text: Let X and Y be two random variables, and r, t, s and u be constants. Which of the following are true? 1. Cov(X+s,Y+u) = Cov(X, Y 2. Cov(rx, tY)=rt Cov(X,Y) 3. Cov(rX+s,tY+u)=rt Cov(X,Y) a) O Only 1 b) O None of them c)O All of them d) O 1 and 2 e) O 2 and 3

Jun 10, 2022

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Let X and Y be two random variables, and r, t, s and u be constants. Which of the following are true? 1. Cov(X+s,Y+u) = Cov(X, Y 2. Cov(rx, tY)=rt Cov(X,Y) 3. Cov(rX+s,tY+u)=rt Cov(X,Y) a) O Only 1 b)...

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