A quality inspector took five samples, each with four observations, of the length of time for glue to dry. The analyst computed the mean of each sample and then computed the grand mean. The mean and grand mean are measured in minutes. Use this information to construct 3-sigma control limits for an x-bar and an R chart. Use the table to match the correct A2,D3, and D4 values to construct the charts. \begin{tabular}{|c|c|c|c|} \hline Number of Observations in Each Sample (n) & Factor for X-bar Chart (A2) & Lower Control Limit for RChart D3) & Upper Control Limit for RChart D4) \\ \hline 2 & 1.88 & 0 & 3.27 \\ \hline 3 & 1.02 & 0 & 2.57 \\ \hline 4 & 0.73 & 0 & 2.28 \\ \hline 5 & 0.58 & 0 & 2.11 \\ \hline 6 & 0.48 & 0 & 2.00 \\ \hline 7 & 0.42 & 0.08 & 1.92 \\ \hline 8 & 0.37 & 0.14 & 1.86 \\ \hline 9 & 0.34 & 0.18 & 1.82 \\ \hline 10 & 0.31 & 0.22 & 1.78 \\ \hline 11 & 0.29 & 0.26 & 1.74 \\ \hline 12 & 0.27 & 0.28 & 1.72 \\ \hline 13 & 0.25 & 0.31 & 1.69 \\ \hline 14 & 0.24 & 0.33 & 1.67 \\ \hline 15 & 0.22 & 0.35 & 1.65 \\ \hline 16 & 0.21 & 0.36 & 1.64 \\ \hline 17 & 0.20 & 0.38 & 1.62 \\ \hline 18 & 0.19 & 0.39 & 1.61 \\ \hline 19 & 0.19 & 0.40 & 1.60 \\ \hline 20 & 0.18 & 0.41 & 1.59 \\ \hline \end{tabular} D3= A2=