A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 28.5, and the average range is 3.9. From Table S6.1, the appropriate value of D₃ is 0, and D₄ is 2.115. What are the UCL and LCL, respectively, for this range chart? A) 30.75 and 26.25 B) 40.2 and 16.8 C) 11.2 and 0 D) 8.25 and 0 E) 32.4 and 24.6

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The Answer of A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 28.5, and the average range is 3.9. From Table S6.1, the appropriate value of D₃ is 0, and D₄ is 2.115. What are the UCL and LCL, respectively, for this range chart? A) 30.75 and 26.25 B) 40.2 and 16.8 C) 11.2 and 0 D) 8.25 and 0 E) 32.4 and 24.6

A Manager Wishes to Build a 3-Sigma Range Chart for a Process