Given the following cost information for company XYZ. Cost Item Quality assurance Equipment maintenance Product redesign Product warranty and repair Product testing and inspection Training Process improvement/Kaizen Material scrap Rework labor Incoming materials inspection After sales customer support Travel to suppliers/process certification Travel to customers/problem solving Total for the year $ 690,000 $ 325,000 $ 334,000 $ 790,000 $ 396,000 $ 370,000 $ 360,000 $ 470,000 $ 450,000 $ 347,000 $ 270,000 $ 99,000 $ 104,000 pictureClick here for the Excel Data File Calculate the following: a. Total appraisal cost b. Total prevention cost c. Total cost of internal failures d. Total cost of external failures Total cost of quality Problem 6-2 (Algo) Rachel loves to bake cookies, but she has an old oven that has trouble maintaining a constant temperature. If the acceptable temperature range for making the cookies is 350 plus or minus 21 degrees, what is the allowable standard deviation in the temperature of her oven in order to achieve a Six Sigma level of quality? (Round your answer to 3 decimal places.) Standard deviation degrees Problem 6-3 (Algo) Rachel loves to bake cookies, but she has an old oven that has trouble maintaining a constant temperature. Assume the acceptable temperature range for making the cookies is 350 plus or minus 22 degrees. Six Sigma quality (3.4 defects per million units produced) is probably a bit much to ask of Rachel's old oven. a. What would the standard deviation in the temperature of her oven need to be if she settled for a Three Sigma" level of quality? (Round your answer to 2 decimal places.) Standard deviation degrees b. If her oven exactly meets this quality level, what percentage of the time would her oven be operating at a temperature outside the acceptable range? Use Table 6-5. (Round your answer to 2 decimal places.) Percentage of the time Problem 6-4 (Algo) Suppose that the Dallas School District wants to achieve Six Sigma quality levels performance in delivering students to school. They have established a 30-minute as an acceptable range within which buses carrying students should arrive at scho a. What is the maximum allowable standard deviation of arrival times required in o achieve this standard of quality? (Round your answer to 2 decimal places.) Standard deviation minutes b. If they achieve this standard, about how many times out of a million deliveries deliver students either too early or too late? (Round your answer to 1 decimal pla Number of times times