hello need assistance in finding a solution for the following question: You want to estimate the avg amount of time that a customer spends in the system (this includes the time waiting on line and the service time at window), which of formulas would you use 2 compute it?? solution 1

solution 2

solution 3

solution 4

solution 5 which one?

Solution 1: Solution 4: Lstp 2 Ws = Wq + p WS Solution 2: Solution 5: Lq+P W, = Ws = Wq + 1 Solution 3: Ws = Ls + 2