CASE OF BAYFIELD MUD COMPANYBayfield Mud Company sent its customer service representative, John Wells, to investigate its product sent to Wet-Land Drilling Inc. The problem was 50 pound bags of he mud treatment agents sent to Wet-Land was recently underweight by 5%. Wet-Land found that the average weight per bag was 47.51 pounds. Normally, the average net load should be 50 pounds per bag with an acceptable standard division of 1.2 pounds. This mistake by Bayfield Mud had a big impact on the cost of Wet-Land. Bayfield Mud Company needed to fix the problem or Wet-Land could find a new supplier. BAYFIELD QUALITY CONTROL To discover the causes of the problem, Bayfield quality control staff randomized 6 bag samples every hour for 3 days, then set the average limits of the graph or Rank chart or R chart. BAR CHART at 10:00 p.m., and shift 3 from 10:00 p.m. at 6:00 a.m. Using data recorded by Bayfield personnel, we find the UCL, LCL, and average sample mean below: Upper Control Limit (UCL) = 50.59 pounds Lower Control Limit (LCL) = 47 .66 pounds Average average of the 72 samples = 49.13 pounds Next, we plot the graph to determine if any changes have occurred in the central tendency of the feeding process. BAR CHART ) = 0 Average range of 72 samples = 3.73 CHART R: CHART DAY 1R: CHART DAY 2R CHART: DAY 3 Concerning the X bar Chart and the R-Chart, the Bay...... middle of paper . .....4816 0 3.7337:00 AM 2.1 3 4.9 7.4816 0 3.7338:00 AM 1.8 3.4 3.8 7.4816 0 3.7339:00 AM 1 .6 2.3 4.6 7.4816 0 3.73310:00 AM 3.1 2.2 7.1 7.4816 0 3.73311:00 AM 3.1 3.3 4.6 7.4816 0 15.73312:00 PM 4.2 3.6 2.2 7.4816 0 15.7331:00 PM 3.6 4.2 3.6 7.4816 0 3.733Shift 2 2:00 PM 4.6 2, 4 2.6 7.4816 0 15.7333:00 PM 2.6 4.5 2 7.4816 0 15.7334:00 3.5 5.6 1.5 7.4816 0 15.7335:00 PM 5 .3 4.9 6 7.4816 0 15.7336:00 PM 5.5 10.2 5.7 7.4816 0 3.7337:00 PM 5.6 5.5 5.6 7.4816 0 3, 7338:00 PM 4.6 4.7 2.3 7.48 16 0 3.7339:00 PM 3 4.7 2.3 7.4816 0 3.733Shift 3 10:00 PM 4.6 3.6 2.6 7.4816 0 3.73311 :00 PM 4.5 3 3.8 7.4816 0 3.73312:00 AM 4.8 2.2 2.8 7.4816 0 3.7331:00 AM 5.4 3.3 2.2 7, 4816 0 3 0.7332:00 a.m. 5.5 3.2 4.2 7.4816 0 3.7333:00 a.m. 3,8 0,8 1,6 7,4816 0 3,7334:00 3,6 4,2 1 7,4816 0 3,7335:00 2.5 5.6 1.9 7.4816 0 3.733