If X and Y are two variables with x = 3.8, y = 4.2, and COV(X, Y) ...

[tth]

If X and Y are two variables with x = 3.8, y = 4.2, and COV(X, Y) = -0.25, then V(X + Y) = 31.58.
  Indicate whether the statement is true or false

Question 2

If X and Y are two variables with E(XY) = 10.56, E(X) = 4.22, and E(Y) = 5.34, then COV(X, Y) = 1.0.
  Indicate whether the statement is true or false

[kxciann]

Answer to Question 1

T

Answer to Question 2

F