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checkitout checkitout
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6 years ago
A pizza delivery service wants to track their delivery times. They take eight samples of four deliveries and record the following data. What are the upper and lower control limits of their R-chart?
 
  Sample  1 2 3 4 5 6 7 8
  Item 1 21.1 20.2 24.1 22.6 21.2 20.9 22.4 20.9
  Item 2 21.7 20.6 21.7 21.7 24.1 23.5 24.6 24.7
  Item 3 23.0 24.5 23.2 23.0 20.6 22.8 23.4 22.8
  Item 4 20.3 23.5 24.4 25.0 20.7 23.2 23.3 24.5
 
  A) 24.9, 20.3
  B) 7.2, 0.0
  C) 3.1, 0.0
  D) 22.6, 0.0
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alohacharlesalohacharles
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checkitout Author
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6 years ago
Thanks
kobbhy
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Yesterday
This helped my grade so much Perfect
hmonier
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2 hours ago
Brilliant ツ
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