Construct a control chart for the fraction nonconforming based on the provided data in the table below with a sample size of $150.$ Assess whether the process is in control or not. If not, assume that assignable$/$special causes can be found for points outside the control limits and compute the revised control limits$.(40$p$.)$

Number of Nonconforming Switches

$\backslash$table$[[$Sample$,\backslash$table$[[$Number of$],[$Nonconforming$],[$Switches$]],,\backslash$table$[[$Sample$],[$Number$]],\backslash$table$[[$Number of$],[$Nonconforming$],[$Switches$]]],[1,8,,11,6],[2,1,,12,0],[3,3,,13,4],[4,0,,14,0],[5,2,,15,3],[6,4,16,1,],[7,0,,17,15],[8,1,18,2,],[9,10,19,3,],[10,6,20,0,]]$