Walton Company has measured its quality costs for the past two years. After the company gathers its quality cost data, it summarizes those costs using the four categories shown below: Prevention costs Appraisal costs Internal failure costs External failure costs Required: Last Year $371,300 $ 471,700 $726,000 $ 1,155,000 This Year $ 656,500 $ 599,500 $470,000 $ 646,000 1. Calculate the total cost of quality last year and this year. 2. For last year, calculate the cost in each of the four categories as a percent of the total cost of quality. 3. For this year, calculate the cost in each of the four categories as a percent of the total cost of quality. 4-a. Calculate the change in total cost of quality over the two-year period. 4-b. Is performance trending in a favorable or unfavorable direction