Use the Given Process Data to Construct a Control Chart $$\begin{array} { l l l l l l l l l l l l } 4 & 7 & 5 & 6 & 8 & 3 & 12 & 4 & 4 & 5 & 6 & 2\end{array}$$

Essay

Use the given process data to construct a control chart for p. A manufacturer monitors the level
of defects in the television sets that it produces. Each week, 200 television sets are randomly
selected and tested and the number of defects is recorded. The results for 12 consecutive weeks
are shown below. $$\begin{array} { l l l l l l l l l l l l } 4 & 7 & 5 & 6 & 8 & 3 & 12 & 4 & 4 & 5 & 6 & 2\end{array}$$