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9. [-/6 Points] -6 ] DETAILS ASWSBE14 21.8.007. . MY NOTES ASK YOUR TEACHER DATA: Tires You may need to use this table to answer this question. The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several days of operation, with the following results. Tread wear measurements are in hundredths of an inch. Sample Tread Wear 1 31 42 28 2 26 18 35 3 | 25 | 30 | 34 4 5 17 2521 17 38 2935 41 42 36 6 G 7 21 1729 B 32 26 28 9 41 34 33 10 11 40 29 1730 26 31 23 19 25 17 2432 12 13 14 15 43 35 17 18 25 29 30 4231 16 17 28 36 32 + 18 4029 31 19 18 29 28 22 34 26 20 Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the R chart. Compute the upper and lower control limits for the R chart. (Round your answers to two decimal places.) UCL - - LCL -

Construct the R chart. UCL 35+ 30 25 20 15+ 10 UCL 35 30 25 20 15+ 10 5 0 A 35 30 25 20 15 10 5 0 TICI Y LCL 5 LCL + LCL = 2 4 6 8 10 12 14 16 18 20 6 Sample Number 2 2 4 6 8 10 12 14 16 18 20 Sample Number 2 4 6 8 10 12 14 16 18 20 8 Sample Number 35 30 25 20 15 10 UCL Sample Range LCL 0 2 4 6 8 10 12 14 16 18 20 8 Sample Number Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the chart. Compute the upper and lower control limits for the x chart. (Round your answers to two decimal places.) UCL = LC = Construct the chart 50+ 50 45 UCL UCL UCL 45 40+ 35 30 25 204 15+ Sample Mean 50 45 40 35 30 25 20 15- M 30 ve WA LCL 25 20 15 LCL LCL 24 2 4 6 8 10 12 14 16 18 20 Sample Number 2 4 6 8 10 12 14 16 18 20 Sample Number 2 4 6 8 10 12 14 16 18 20 B Sample Number UCL ats 35 30 LCL 24 2 4 6 8 10 12 14 16 18 20 Sample Number