QUESTION 5 If E[X] = 6 and Var[X] = 5, what is Var[2X - 10]? QUESTION 6 If E[X] = 6 and Var[X] = SAND E[Y] = 4 and Var[Y] = 2, what is E[2X - 3v + 10]? QUESTION 7 For independent random variables X and Y, E[X] = 6 and Var[)(] = 5 AND E[Y] = 4 and Var[Y] = 2, what is Var[2X - 3Y + 10]? QUESTION 3 For independent random variables X and Y, with E[X] = 3 and EM = 7, what is E[XY]? QUESTION 9 Random variable X has mean ,u = 5, variance y = 4, and unknown probabilty distribution. What is true about the following probability: P( 1