Larry's Boat Shop Wants to Monitor the Number of Blemishes

Essay

Larry's boat shop wants to monitor the number of blemishes in the paint of each boat. Construct a 3-sigma c-chart to determine if their paint process is in control using the following data.
$$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Sample } \\\text { Number }\end{array} & \begin{array} { c } \text { Number of } \\\text { Defects }\end{array} \\\hline 1 & 3 \\\hline 2 & 4 \\\hline 3 & 2 \\\hline 4 & 1 \\\hline 5 & 3 \\\hline 6 & 2 \\\hline 7 & 1 \\\hline 8 & 4 \\\hline 9 & 2 \\\hline 10 & 3 \\\hline\end{array}$$