PART 1 This case study provides some details about the activities of the Whisk Wheel Company, which is currently in the process of applying statistical quality control and problemsolving techniques to their wheel hub operation. Whisk Wheel supplies hubs and wheels to a variety of bicycle manufacturers. The wheel hubs under discussion in this case fit on an all-terrain model bicycle. BACKGROUND The Whisk Wheel Company has just been notified by its largest customer, Rosewood Bicycle Inc., that Whisk Wheel will need to dramatically improve the quality level associated with the hub operation. Currently the operation is unable to meet the specification limits set by the customer. Rosewood has been sorting the parts on the production line before assembly, but they want to end this procedure. Beginning immediately, Whisk Wheel will be required to provide detailed statistical information about each lot of products they produce. (A lot is considered one day's worth of production.) At the end of each day, the lot produced is shipped to Rosewood just-in-time for their production run. THE PRODUCT Figure 1 diagrams the product in question, a wheel hub. The hub shaft is made of chrome-moly steel and is 0.750 inch in diameter and 3.750 inches long. The dimension in question is the length. The specification for the length is 3.750 +/-0.005 inches. THE PROCESS Twelve-foot-long chrome-moly steel shafts are purchased from a supplier. The shafts are straightened and then cut to the 3.750-inch length. Several different machines perform the cutting operation. The data presented in Table 1 are for the production off one machine only. Figure 1. Hub Assembly In class Assignment: 1) Create a histogram from today's data. Write a summary report for the results. 2) Also create an appropriate control chart from the data and interpret the results. PART 1 This case study provides some details about the activities of the Whisk Wheel Company, which is currently in the process of applying statistical quality control and problemsolving techniques to their wheel hub operation. Whisk Wheel supplies hubs and wheels to a variety of bicycle manufacturers. The wheel hubs under discussion in this case fit on an all-terrain model bicycle. BACKGROUND The Whisk Wheel Company has just been notified by its largest customer, Rosewood Bicycle Inc., that Whisk Wheel will need to dramatically improve the quality level associated with the hub operation. Currently the operation is unable to meet the specification limits set by the customer. Rosewood has been sorting the parts on the production line before assembly, but they want to end this procedure. Beginning immediately, Whisk Wheel will be required to provide detailed statistical information about each lot of products they produce. (A lot is considered one day's worth of production.) At the end of each day, the lot produced is shipped to Rosewood just-in-time for their production run. THE PRODUCT Figure 1 diagrams the product in question, a wheel hub. The hub shaft is made of chrome-moly steel and is 0.750 inch in diameter and 3.750 inches long. The dimension in question is the length. The specification for the length is 3.750 +/-0.005 inches. THE PROCESS Twelve-foot-long chrome-moly steel shafts are purchased from a supplier. The shafts are straightened and then cut to the 3.750-inch length. Several different machines perform the cutting operation. The data presented in Table 1 are for the production off one machine only. Figure 1. Hub Assembly In class Assignment: 1) Create a histogram from today's data. Write a summary report for the results. 2) Also create an appropriate control chart from the data and interpret the results