Ch 10 #8. See the attached screenshot. Please provide each step so I can learn how to answer this type of question.

8. Given the following data for the number of defects per spool of cable, using three-sigma limits, is the process in control? OBSERVATION \begin{tabular}{lcccccccccccccc} & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 & 14 \\ \hline Number of defects & 2 & 3 & 1 & 0 & 1 & 3 & 2 & 0 & 2 & 1 & 3 & 1 & 2 & 0 \end{tabular}