Consider the data in $"$spc example xIsx". In it$,$ samples of size $10$ are taken at various times during day, and weights recorded. Complete the table with the sample average and range for all samples.

Verify that A$2($chapter $18,$ figure $18\mathrm{.}6)$ for a sample size of $10$ is $0\mathrm{.}31$

What is the LCL $($lower control limits$)$ for future sample averages?

$($provide $4$ decimal places$)$