$\underline{\text { CASE STUDY: } 3}$ Read the following scenario and answer all the questions given below. XYZ is a steel manufacturing company in Buraimi. In order to assess the quality of the steel, the tensile strength of the steel data was collected from 25 items, which are mentioned in the below table: C.L $=44$; L.C.L $=40$; U.C.L $=48$ \begin{tabular}{[1]111]111]111]1[1|11|1|1|1|1|1|1|1|1|1|1|} \hline S.NO & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 & 14 & 15 & 16 & 17 & 18 & 19 & 20 \hline Tensil strength & 43 & 45 & 43 & 48 & 47 & 45 & 50 & 52 & 49 & 48 & 47 & 46 & 45 & 44 & 42 & 40 & 45 & 44 & 42 & 40 \hline \end{tabular \begin{tabular}{[1|1|l|ll|1|} \hline S.NO & 21 & 22 & 23 & 24 & 25 \hline Tensil strength & 38 & 40 & 42 & 44 & 46 \\ \hline \end{tabular) SP.VS.7211