The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To stud

[answerhappygod]

The Goodman Tire And Rubber Company Periodically Tests Its Tires For Tread Wear Under Simulated Road Conditions To Stud 1 (168.95 KiB) Viewed 21 times

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 shift 1 Sample Tread Wear 31 422 26 1835 25 30 34 2 3 4 17 25 21 5 38 2935 6 4236 7 21 1729 8 32 2628 9 41 34 33 10 29 1730 11 26 31 40 23 1925 12 13 1724 32 14 43 35 17 15 18 25 29 16 30 42 21 3632 17 28 18 402931 19 18 29 28 20 22 3426 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 R chart. (Round your answers to two decimal places.) R UCL = LC- UCL Construct the R chart. 35 30 25 20 15 10 35 30 25 20 15+ 10 UCL Sample Range 35 30 25 20 15 10 5 07 UCL 35 30 25 20 15 10 5 0 UCL LCI. LCL 5 0 5 0 LCI LCL 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 Sample Number 2 4 6 8 10 12 14 16 18 20 Sample Number o O 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 chart. (Round your answers to two decimal places.) UCL - c. Construct the x chart. 50+ 45 40 504 45 40 35 UCL UCL UCL UCL w 50 45 40 35 30 25 20 15 w SO 45 40 35 301 25 20 13 w A 25 LCI. LCL 20 15 15 LCL LCL 2 4 6 8 10 12 14 16 18 20 Sample Number 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 4 Sample Number 0 O