A shirt manufacturer buys cloth by the 100 -yard roll from a supplier. For setting up a control chart to manage the irregularities (e.g., loose threads and tears), the data in Table 15.1 were collected from 10 samples provided by the supplier. Table 15.1: Irregularities for a shirt manufacturer \begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|} \hline Sampl & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 \\ \hline \begin{tabular}{l} Irregu \\ larities \end{tabular} & 3 & 5 & 2 & 6 & 5 & 4 & 6 & 3 & 4 & 5 \\ \hline \end{tabular} 1. The lower specification limit Blank 1 2. The upper specification limit Blank 2 3. Is the process under control? Please choose YES or No Blank 3 Please give your answers correct to 3 decimal places