A construction company is managing a project where workers are inserting a large number of anchors into concrete abutments as part of a large machine installation. The location of the anchors relative to an adjacent wall is critical to the success of the project because they will be used to locate important structural members in the finished project. For this reason the location of the anchors is closely monitored. The data on the next page are X-bar and R values.

Determine the values for A2, D3, and D4 using Appendix 2 in the text. b. Calculate the X-bar-bar (average of the X averages) and R-bar (average of R values) (use x.xxxxx format). c. Calculate the LCL, CL, and UCL for the X-Bar and R charts (use x.xxxxx format). d. Create the X-Bar chart e. Create the R chart f. Arrange the X-Bar and R charts and data as illustrated on page 5. g. Based on the X-Bar and R charts, determine if the anchor insertion process is under control. Use the discussion in the text regarding interpreting control charts as a guide (see pages 160-168). State why you think the process is or is not under control. Record your response using complete sentences in a textbox on the PROBLEM_2 sheet as illustrated on page 5.