18. Suppose that a company makes the following product with the following numbers of defects. Construct a p chart to see whether the process is in control (n = 100). Sample Defectives 1 2 3 67 28 45 32 5 30 6 48 7 32 8 24 25 10 27 11 28 12 29 13 65 14 66 15 15 69 10 16 70 17 18 19 20 20 26 13 45 46 21 47 48 22 22 23 28 24 24 29 25 25 75 p = n = UCL = P + 3((P)(1-)/n) LCL = P - 3((P)(1-P)/n) =. II The process is not in control. There are a number of data points outside the control limits. % CL UCL LCL Sample Defectives Defective 1 67 2 28 3 45 4 32 5 30 6 48 7 32 8 24 9 25 10 27 11 28 12 29 13 65 14 66 15 69 16 70 17 26 18 13 19 45 20 46 21 47 22 48 23 28 24 29 25 75 Average