Random Samples
Random Samples of 200 Parts Were Taken on an Assembly

Random samples
Random samples of 200 parts were taken on an assembly line every hour for the past 25 hours. The number of defective parts is shown in the accompanying table.
$$\begin{array}{l}\begin{array} { | l | l l l l l l l l l l l l l | } \hline \text { Sample } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 \\\hline \begin{array} { l } \text { Number of } \\\text { defectives }\end{array} & 5 & 2 & 4 & 10 & 2 & 6 & 8 & 2 & 0 & 5 & 12 & 11 & 8 \\\hline\end{array}\\\\\begin{array} { | l | c c c c c c c c c c c c | } \hline \text { Sample } & 14 & 15 & 16 & 17 & 18 & 19 & 20 & 21 & 22 & 23 & 24 & 25 \\\hline \begin{array} { l } \text { Number of } \\\text { defectives }\end{array} & 10 & 5 & 13 & 7 & 5 & 7 & 11 & 3 & 16 & 3 & 2 & 10 \\\hline\end{array}\end{array}$$
-Calculate the centerline and control limits for the p-chart.
Centerline = ____________________
Lower value = ____________________
Upper value = ____________________