Question

The manager of Perrotti's Pizza collects data concerning customer complaints about pizza delivery. Frequency Problem A. Topping is stuck to box lid B. Pizza arrives late C. Wrong topping or combination D. Wrong style of crust E. Wrong size F. Pizza is partially eaten G. Pizza never arrives a. Choose the correct Pareto chart below to identify the "vital few" delivery problems. 100% 100% 100% Q 100% Q Failures Failures Failures Failures BAGCDEF Type of failure ABCDEFG Type of failure BAGCDEF Type of failure BAGC DE Type of failure b. The manager of Perrotti's Pizza is attempting to understand the root causes of late pizza delivery and has asked each driver to keep a log of specific difficulties that create late deliveries. After one week, the logs included the following entries: delivery vehicle broke down, couldn't make it across town to deliver second pizza in time, couldn't deliver four pizzas to four different customers in time, kitchen was late in producing order, got lost, order ticket was lost in production, couldn't read address on ticket and went to wrong house.

Answer 1

Total problems = 20+37 + 7+7+5+2+10 = 88

Graph C is a correct option as it places the problems in decreasing order and the scale is 30+ for B.

Part b)

I = Late production of material

II = Scheduling too many deliveries on one trip. The method of too many deliveries on single trip caused a delay

III = vehicle broke down, the vehicle (Machine) for delivery failed.

IV =Manpower misunderstood the address and went to incorrect location