Pareto Analysis is a "Root Cause Analyses" methodology for identifying and prioritizing the possible root causes of the problem. Pareto Charts are utilized for determining the significance level of the root causes so that the first piece of work you do resolves the greatest number of problems. In Pareto Analyses, possible root causes of the problem are written down, scored regarding to their possible effects, and actions are taken for the ones that will have great effect. a) (8 pts) What is the main difference and advantage of Pareto Analyses in comparison with other Root Cause Analyses techniques? b) (12 pts) A hotel has been suffering from customer complaints for a long time. After conducting the root cause analyses, resulting "Pareto Chart" is given below, which basically shows the root causes of the customer complaints and their impacts. According to this Pareto Chart; which root causes have to be solved to avoid 85% of customer complaints? Pareto Chart Hotel Complaints 35 120% 30 + 100% 25 + 80% 20 60% 15 40% 10 20% 0% Concierge responsiveness Vait time for Room Room service Staff attitude Billing process Room dcor All other reservations cieanliness delivery time 11 31 18 21 Quantity 39% 75% 85% 10% Cum% 61% 96% 99% 100% % of Total 39% 23% 14% 6% 3% Occurences Cumulative Percent