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. Last Year This Year $357,000 $650,000 $445,000 $545,000 $790,000 $500,000 $1,100,000 $680,000 Required: 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. Discuss the company's efforts to manage its costs of quality over the two-year period. Is performance trending in a favorable or unfavorable direction? Why