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$\backslash$table$[[2v,0\mathrm{.}21,,],[11,0\mathrm{.}29,0\mathrm{.}26,1\mathrm{.}10],[12,0\mathrm{.}27,0\mathrm{.}26,1\mathrm{.}74],[13,0\mathrm{.}25,0\mathrm{.}28,1\mathrm{.}72],[14,0\mathrm{.}24,0\mathrm{.}31,1\mathrm{.}69],[15,0\mathrm{.}22,0\mathrm{.}33,1\mathrm{.}67],[16,0\mathrm{.}21,0\mathrm{.}35,1\mathrm{.}65],[17,0\mathrm{.}20,0\mathrm{.}36,1\mathrm{.}64],[18,0\mathrm{.}19,0\mathrm{.}38,1\mathrm{.}62],[19,0\mathrm{.}19,0\mathrm{.}39,1\mathrm{.}61],[20,0\mathrm{.}18,0\mathrm{.}40,1\mathrm{.}60],[,,0\mathrm{.}41,1\mathrm{.}59]]$

Heip

Seve t Exit

Subrevit

a$.$ Using factors from above table, determine upper and lower control limits for mean and range charts.

Note: Round your intermediate calculations and final answers to $2$ decimal places. Leave no cells blank $-$ be certain to enter $"0^{**}$ wherever required.

$\backslash$table$[[,$Mean Chart,Range Chart$],[$UCL$,,],[$LCL$,,]]$

b$.$ Decide if the process is in control.

The process is in control.

The process is not in control.