HADM 301 HW4 433362 - X-bar chart 20 18 Average Delivery...

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X-bar chart 0 2 4 6 8 10 12 14 16 18 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Day Average Delivery Time R-bar chart 0 2 4 6 8 10 12 14 16 1 2 3 4 5 6 7 8 9 1011121314151617181920 Day Range of delivery times        =10.0626 control point        =14.1253 UCL (x)          =5.9999 LCL (x)        = 7.041  Control point         = 14.8846 UCL(r)         = 0 LCL (r)
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X-bar chart 0 2 4 6 8 10 12 14 16 18 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Day Average Delivery Time R-bar chart 0 2 4 6 8 10 12 14 16 1 2 3 4 5 6 7 8 9 1011121314151617181920212223 Day Range of delivery times =10.062 6 control point        =14.1253 UCL (x)          =5.9999        = 7.041  Control point         = 14.8846 UCL(r)         = 0 LCL (r)
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Given this new data, it seems as if the delivery process has become increasingly slower  with at a more consistent rate. There are several possible explanations for these alarming  results, including: Poor process design layout: by mapping out the delivery process routes, one 
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  • Fall '06
  • RVERMA
  • Bottleneck, Understaffing, 16 14 12 10 8 6 4 2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Day, 16 14 12 10 8 6 4 2 0 1 2 3 4 5 6 7 8 9 1011121314151617181920 Day, 16 14 12 10 8 6 4 2 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223 Day, 20 18 16 14 12 10 8 6 4 2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Day

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