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The Watson Electric Company.r produces LED light bulbs. The following data on the number of lumens for 4D-watt bulbs were collected from the process. You
The Watson Electric Company.r produces LED light bulbs. The following data on the number of lumens for 4D-watt bulbs were collected from the process. You are asked to prepare the appropriate 3 sigma control chart to evaluate whether the process is in control. Observation Sample Day 1 2 3 4 1 614 622 598 610 60? 611 61? 613 55'1 580 595 602 2 3 4 630 615 605 598 5 600 624 618 614
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