In Example 2, the organization wants to
also assess the process of fitting the caps. Let us assume that the samples are
drawn after the process and a count is made of the number of defective metallic
caps per batch. Table 19.13 has details of the number of defective caps in the
last ten batches. Assume that the batch size is 100.
(a) What type of control chart will you
recommend for controlling the quality of the cap fitting process?
(b) Compute the relevant parameters for the
chart and plot the data in the chart.
(c) Is the process in control? If not,
revise the control chart by recomputing the chart parameters.