so that shoppers choose the checkout lane has the smallest total service time, including the shoppers already in the queue and the total service time of the shopper currently being served (don’t account for any partial service time of the shopper currently being served). Again, break ties in favor of the lower-numbered checkout (but compared to Exercise 4-31, ties should be very unlikely, kel01315_ch04_121-206.indd 204 05/12/13 3:29 PM Modeling Basic Operations and Inputs 205 actually, probability zero; why so here and not in Exercise 4-31?). Compare your results (same output performance metrics) with those from Exercise