The data in Table $9$E$.3$ are temperature readings from a chemical process in $C,$ taken every two minutes.

$($Read the observations down, from left.$)$ The target value for the mean is ${}_0=950.$

$($a$)$ Estimate the process standard deviation. $($Excel Sheet$4$ named as StDev$)$

$($b$)$ Set up and apply a tabular CUSUM for this process, using standardized values $h=5$ and $k=\frac{1}{2}.$

Interpret this chart. Provides UCL and LCL$($Excel Sheet $1$ named as CUSUM$)$

$($c$)$ Construct an EWMA chart using $L=2\mathrm{.}7$ and $=0\mathrm{.}1.$ Given the individual UCL and LCL for each

observation. $($Excel Sheet $2$ named as EWMA$)$

$($d$)$ Provide a Moving A$|$verage chart with w$=5.$ Provides UCL and LCL for each observation. $($Excel

Sheet $3$ named as MA$)$