In-class Assignment: Statistical Process Control Part 1. The data processing department of the Arizona Bank has five data entry clerks. Each working day their supervisor verifies the accuracy of a random sample of 250 records. A record containing one or more errors is considered defective and must be redone. The results of the last five samples are shown in the table, All wure checked to make sure that none was out of control. Sample number Number of Defective R control Limit and the lower (a) Based on these historical dati, comput control limit of a p-chart. (b) Samples for the next 4 days showed the Sample Number of Tues Wed Thurs Fri Is the process in control or out of control 2. The Minnow County Highway Safety Department monitors accidents at the intersection of Routes 123 and 14 Accidents at the intersection have averaged three per month (a) Which type of control chart should be used? Compute the upper control limit and the lower control limit. (b) Last month, even accident occurred at the intersection. Is this sufficient evidence to justify a claim that something has changed at the inter