A server operates with 80% utilization. The coefficient of variation for the service process is 0.5 and the coefficient of variation of the arrival process is 1. The customers arrive at the average rate of 20 per hour. What is the average time a customer spends in the system according to the single-server queue model

The initial tableau of a linear programming problem is given. use the simplex method to solve it. x 1 x 2 x 3 s 1 s 2 z 1 2 4 1 0 0 8 3 4 1 0 1 0 10 minus3 minus12 1 0 0 1 0 the maximum is nothing when x 1equals nothing, x 2equals nothing, x 3equals nothing, s 1equals3, and s 2equals0. (be sure to simplify to lowest terms if necessary.)