Please answer A through D for this question

14) [25 pt] Speedy Pizza Delivery Service wants to track their delivery times (time from store to customer back to store). They take 8 samples of four delivery people and record the following data (in minutes). The performance factors were 100% for every delivery timed, and the allowance factor is 0.20 including all paid breaks, fatigue, etc. 2. 3 4 5 6 7 8 lei 20.2 22.6 21.2 20.9 1 Delivery Person #1 21.1 Delivery Person #2 21.7 Delivery Person #3 23.0 Delivery Person #4 20.3 20.6 21.7 24.1 24.1 21.7 23.2 24.4 22.4 24.6 23.4 23.3 20.9 24.7 22.8 25.5 mean 21.7 22.8 22.9 23.2 23.5 22.8 23.2 24.5 23,0 20.6 23.5 le 25.0 20.7 A) (8 pts) What are the upper and lower control limits for the delivery time range and mean charts? B) (4 pts) Is the process in control or out of control? C) (6 pts) How many deliveries can be made by 1 person in an average 8 hour work day? D) (7 pts) If Speedy Pizza Delivery Service delivered 12 pizzas per 8 hour day per person yesterday, what is yesterday's capacity efficiency for the delivery operation