A textile manufacturer wants to set up a control chart for irregularities (e. oil stains, shop soil, loose threads, and tears) per 100 square yards...

A textile manufacturer wants to set up a control chart for irregularities(e.g. oil stains, shop soil, loose threads, and tears) per 100 square yards of carpet. The data (Problem 1) were collected from a sample of twenty l00-square-yard pieces of carpet:(a) Using these data, set up a c-chart with z =3.(b) Suppose that the next five samples had 15, 18, 12, 22, and 21 irregularities. What do youconclude?