A design of experiment was conducted on the process described in problem 8-17. Some process improvements were
Question:
c. What is your estimate of the process average and standard deviation following process improvement?
Transcribed Image Text:
Brinell Hardness (Kgs per mm Sample After Improvements 1 2 3 456 7 8 9 10 537 550 535 562 551 575 544 524 556 530 557 550 535 517 531 540 551 539 523 573 555 575 554 547 557 547 534 558 575 586 531 552 552 508 581 536 518 539 554 581 5 518 540 519 543 540 575 552 530579 575 574 549 568 577 526 577 537 566 568 533 550 581 538 554 559 548 549 566 563 552 550 551 541 543 549 565 543 514 549 539 530 557 546 543 545 603 542 524 559 538 10 563 | 530 | 547 | 566| 544 | 568 | 559 | 546 | 531 | 532 11 528 549 553564 559 561 523527 560 576 12 542 543 557 553 539 556 549546 555 530 13 536 523 561 551 523 550 549 551 563 533 14 565 529 536530 549 526 535 527 528 551 15 529 563 530559 558 519 568 533 567 563 16 584 546 562 579 516 545 535 524 559 535 17 539 563 535 536 540 570 574571 576 546 18 539 539 541546 572 540 552 554 549 546 19 593 537 537541 544 527 553527 553 536 20 546 583 542529518 557 516 538 533 563 21 550 563 550516 555 558 514584538 550 22 554 559 560 551 557 541 578539 502 529 23 577 531 559545 566 562 570549 523545 24 508 557 575551 566 546 561565 540 511 25 552 538 566 541 538 541 554 566 534 541 X and s
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a We observe a noticeable drop in the sample standard deviation following the change This ...View the full answer
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Quality Inspired Management The Key to Sustainability
ISBN: 978-0131197565
1st edition
Authors: Harold Aikens
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