Q3: It is known that the process mean (0) is 1.5 microns and the process standard deviation (0) is 0.15 . Using sample size n=5, find a L-sigma Shewart control chart for X with ARL0=500. (a) The value of L=3.0902 ? (3pts) (b) Write down the values for the LCL, center line, and UCL of this chart in (a). (3pts) \begin{tabular}{ll} \hline & UCL=1.5+3.0902(0.15)/ 5=1.707339 \\ \hline & Center line =1.5 \\ & LCL=1.53.0902(0.15)/ 5=1.292661 \end{tabular}