The following table contains the measurements of the key length dimension from a fuel injector. These samples of size five were taken at one-hour intervals. Use three-sigma control limits. Use Exhibit 137. a. Calculate the mean and range for the above samples. Note: Do not round intermediate calculations. Round your answers to 3 decimal places. b. Determine X and R. Note: Do not round intermediate calculations. Round your answers to 3 decimal places. c. Determine the UCL and LCL for an X-chart. Note: Do not round intermediate calculations. Round your answers to 3 decimal places. d. Determine the UCL and LCL. for an R-chart. answers to 3 decimal places. e. What comments can you make about the process? The process is in statistical control: The process is out of statistical control