OBSERVATION Sample 1 2 3 4 1 604 612 588 600 597 601 607 603 581 570 585 592 4 620 605 595 588 590 614 608 604 2. 3.
OBSERVATION Sample 1 2 3 4 1 604 612 588 600 597 601 607 603 581 570 585 592 4 620 605 595 588 590 614 608 604 2. 3.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Question
The Watson Electric Company produces incandescent light bulbs. The following data on the number of
lumens for 40-watt light bulbs were collected when the process was in control.a. Calculate control limits for an R-chart and an x-chart.
b. Since these data were collected, some new employees were hired. A new sample obtained the fol-
lowing readings: 625, 592, 612, and 635. Is the process still in control?
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