The data shown in Table 6E 4 are the deviations from nominal diameter for holes drilled din a carbon fiber composite material used in aerospace manufacturing The values reported are deviations from nominal in ten thousandths of an inch (a) Set up x and R charts on the process Is the process in statistical control (b) Estimate the process standard deviation using the range method (c) If specifications are at nominal iuml plusmn iuml 100, what can you say about the capability of this process Calculate the PCR Cp TABLE 6E 4 Hole Diameter Data for Exercise 6 9 Sample Number , , 1 30 50 20 10 30 0 50 60 20 30 3 50 10 20 30 20 4 10 10 30 20 50 5 20 40 50 20 10 0 0 40 40 20 7 0 20 2010 8 30 100 0 0 20 20 10 10 10 20 30 0 50 11 40 0 20 0 20 12 30 20 30 10 40 13 30 30 010 10 14 30 10 50 10 30 15 10 0 50 40 0 0 0 30 0 17 20 20 30 30 20 18 10 20 50 30 10 19 50 10 40 20 0 20 50 0 0 30 10 70 30 16

Question: The data shown in Table 6E.4 are the deviations from nominal diameter for holes drilled din a carbon-fiber composite material used in aerospace manufacturing. The

The data shown in Table 6E.4 are the deviations from nominal diameter for holes drilled din a carbon-fiber composite material used in aerospace manufacturing. The values reported are deviations from nominal in ten-thousandths of an inch.

(a) Set up x and R charts on the process. Is the process in statistical control?
(b) Estimate the process standard deviation using the range method.
(c) If specifications are at nominal ï‚±ï€ 100, what can you say about the capability of this process? Calculate the PCR Cp.

TABLE 6E.4 Hole Diameter Data for Exercise 6.9 Sample Number , , 1 30 +50-20 +10 +30 0 +50 -60 -20 +30 3 -50 +10 +20 30 +20 4 10-10 +30 -20 +50 5 +20 40+50 +20 +10 0 0+40 -40 +20 7 0 +20-2010 8 + +30 -100 0 0 +20-20 +10 10 +10 +20 +30 +0 +50 11 +40 0 +20 0 +20 12 30+20 +30 +10 +40 13 +30 30 010 +10 14 +30-10+50-10-30 15 +10 0 +50 40 0 0 0+30 0 17 +20 +20 +30 +30 -20 18 +10 20 50 30 +10 19 50-10 +40 +20 0 20 +50 0 0 30 +10 +70-30 16

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