A manufacturer produces bolts for commercial use, and tests the quality of production by choosing a sample of 5 bolts every 2 hours from production. Because of variation, not all bolts have the same length. Shown below are 8 samples. Use the information below to construct anx barchart, andRchart, and determine if the process is capable and in control.

• Sample 1: 8.01, 7.99, 7.99. 8.00, 7.98
• Sample 2: 8.03, 7.96, 8.01, 8.02, 7.97
• Sample 3: 7.96, 7.97, 7.96, 7.99, 8.01
• Sample 4: 8.00, 8.01, 7.97, 8.01, 7.99
• Sample 5: 8.02, 8.03, 7.99, 8.01, 8.02
• Sample 6: 8.02, 8.01, 7.97, 8.00, 8.01
• Sample 7: 8.03, 8.04, 8.03, 8.00, 7.99
• Sample 8: 7.96, 7.99, 8.02, 8.01, 7.98

Prepare a charts using any tool you wish, i.e., PowerPoint, MS Word, Excel, or free tools such as Apache OpenOffice and portable and installable versions of LibreOffice. Save your document as a pdf file for uploading to your discussion area. Answer the following questions:

• Is the process capable and in control?
• Why do we need both anx barandRchart?
• When a process is in control, is it producing acceptable levels of quality?