Daily samples of 100 power drills are removed from drill master’s assembly line and inspected for defects. over the past 21 days, the following information as show in the table below has been gathered. a. develop a 3 standard deviation (99.7% confidence) p-chart and graph the sample. is the process in control? day number of defective drills 1 6 2 5 3 6 4 4 5 3 6 4 7 5 8 3 9 6 10 3 11 7 12 5 13 4 14 3 15 4 16 5 17 6 18 5 19 4 20 3 21 7