(c) Consider the fraction (nonconforming) control chart given in Figure 3.1. According to this p-chart, the process is out of control. 0.18 0.17 0.16 0.15 0.14 0.13 Fraction nonconforming 0.12 0.11 0.10 0.09 0.08 1 6 7 8 9 10 2 3 4 5 Sample number Figure 3.1 Suppose we want to set up a fraction nonconforming control chart to investigate future production quality. In this case, setting up means deciding on the central line, upper control limit (UCL) and lower control limit (LCL) of the chart. Assume you have the data of the 10 samples depicted in Figure 3.1. (i) When will you use the same central line and the control limits shown in Figure 3.1 to investigate future production quality (ii) When will you reject the central line and the control limits shown in Figure 3.1 to investigate future production quality? - (iii) Suppose the reasons you advanced in Part (ii) apply. Explain how you would compute a new central line, UCL and the LCL with the data obtained in the 10 samples