Please answer using POM QM windows, just need the screen shot of the results along with the analysis because i cant use qm in MAC thanks!!

: 13-10 The Schmedley Discount Department Store has ap- proximately 300 customers shopping in its store be- tween 9 A.M. and 5 P. M. on Saturdays. In deciding how many cash registers to keep open each Satur- day, Schmedley's manager considers two factors: customer waiting time and the associated waiting cost) and the service costs of employing additional checkout clerks. Checkout clerks are paid an average of $8 per hour. When only one is on duty, the wait ing time per customer is about 10 minutes (or hour): when two clerks are on duty, the average checkout time is 6 minutes per person: 4 minutes when three clerks are working, and 3 minutes when four clerks are on duty. Schmedley's management has conducted cus- tomer satisfaction surveys and has been able to esti- mate that the store suffers approximately $10 in lost sales and goodwill for every hour of customer time spent waiting in checkout lines. Using the informa- tion provided, determine the optimal number of clerks to have on duty each Saturday to minimize the store's total expected cost