Assignment:
Data were collected from a process in which the factor of interest was whether a finished item contained a particular attribute. The fraction of items that did not contain the attribute was recorded. A total of 20 samples were selected. The common sample size was 150 items. The total number of nonconforming items was 720. Based on these data, compute the upper and lower control limits for the p-chart.
Provide complete and step by step solution for the question and show calculations and use formulas.