A convenience store has two separate locations where customers can be checked out as they leave. These locations each have two cash registers and two employees who check out customers. Let X be the number of cash registers being used at a particular time for location 1 and Y the number being used at the same time for location 2. The joint probability function is given by the accompanying table. Complete parts (a) through (c) below. Click the icon to view the joint probability function. 31 I 51 (Simplify your answers.) (b) Give E(X) and Var(X). E(X)= 1.16 (Type an integer or a decimal. Round to two decimal places as needed.) 31 Var(X) = 0.6944 (Type an integer or a decimal. Round to four decimal places as needed.) (c) Give E(XIY =2) and Var(XIY=2). 54 E(XIY=2)= 37 (Simplify your answer.) Var(XIY=2)= (Simplify your answer.)

Q3// Evaluate the following (Choose Two Only): 1. x2+1 xp áp (*

Why is y -2/3? How did you get that?

|y ay VI6-944

How do you rewrite the top expression into the bottom? If possible.

Suppose Var(X) = 75, Var(Y) = 83, and X and Y are independent. What is Var(.67X + .33Y)?

How do I solve this problem?

Part three was incorect. I was told you cannot do the computatiopns without substituting in the T and F Values first. Can you do show me how to do it that way?

9/3 + 2 (9-3) = ? I thought parentheses went first... but something told me to divide then add then parentheses... anyone know for sure?

What is the inverse of p -->q