please find the upper control limit, center line, and lower control limit

Use the information below to answer the next 9 questions. A quality inspector took six samples, each with twenty observations, of the weight of a bagging process, in pounds. The sample means and ranges are shown below. Range 0.55 0.75 Sample 1 2 3 4 5 6 Mean 3.55 3.80 3.50 3.60 3.50 3.55 0.55 0.51 0.55 0.65 Use this information to obtain a three-sigma R-chart for the dispersion of the weight. Use that control chart to answer the questions below. Do not round intermediate calculations. Round your final answers to three decimal points. Question 27 (2.5 points) What is the upper control limit? Your