Question: row 11 A2 is .285 d2 is 3.173 D3 is .256 D4 is 1.744 Following is some SPC information about delivery times from a mail

row 11 A2 is .285 d2 is 3.173 D3 is .256 D4 is 1.744
row 11 A2 is .285 d2 is 3.173 D3 is .256 D4 is
row 11 A2 is .285 d2 is 3.173 D3 is .256 D4 is
Following is some SPC information about delivery times from a mail to order company. n=6 X-Bar Range UCL 5.05 6.74 CL 3.21 3.50 LCL 1.32 0.000 Range X-Bar We GRANO 2 5 10 Sampo A new survey showed that customers expected deliveries lasting between O and 7 days. a) What are the current process capability indexes of the process? b) Interpret the result obtained in a) Table D3 d2 1.128 1.693 : Sample Size = n 2 3 4 5 6 7 8 A2 1.880 1.023 0.729 0.577 0.483 0.419 0.373 0.337 0.308 2.059 2.326 2.534 2.704 2.847 2.970 3.078 DA 3.267 2.574 2.282 2.114 2.004 1.924 1.864 1.816 1.777 0.076 0.136 0.184 0.223 9 10 11 0s 0 2 172 0756 1 244

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