Problem 1: Determine the trial central line and control limits for p chart using the following data, which are related to the process of dental insurance claims. Use Excel to plot the p chart and determine if the process is stable. If there are any out - of - control points, determine the revised central line and control limits. Subgroup Number Number Number Subgroup Inspected Nonconforming Number 300 3 14 300 6 15 300 4 16 300 6 17 300 20 18 300 2 19 300 6 20 300 7 21 300 3 22 300 0 23 300 6 24 300 9 25 300 5 2 3 4 5 6 7 8 9 10 11 12 13 Number Number Inspected Nonconforming 300 6 300 7 300 4 300 5 300 7 5 300 0 300 2 300 3 300 6 300 300 8 300