ymklay3341 ymklay3341
  • 24-11-2022
  • Mathematics
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sample service life (hours) 1 495 500 505 500 2 525 515 505 515 3 470 480 460 470 if he uses upper and lower control limits of 520 and 480 hours, on what sample(s) (if any) does service life appear to be out of control?

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