Daily samples of 100 power drills are removed from the assembly line at Drills by Stergios Fotopoulos and inspected for defects. Over the past 21 days, the following information has been gathered. Develop a 3 standard deviation (99.73% confidence) p-chart and graph the samples. Is the process in control?

DAY 1 2 3 4 5 6 7 8 9 10 11 DEFECTIVES 6 5 6 4 3 4 5 3 6 3 7 DAY 12 13 14 15 16 17 18 19 20 21 DEFECTIVES 5 4 3 4 5 6 5 4 3 7