$(10$ points$)$ Sampling $9$ boxes per every hour for the past $8$ hours has produced the following results:

$\backslash$table$[[$WEIGHT OF SAMPLE,WEIGHT OF SAMPLE$],[$HOUR$,($AVG$.$ OF $9$ BOXES$),$HOUR,$($AVG$.$ OF $9$ BOXES$)],[1,16\mathrm{.}1,5,16\mathrm{.}3],[2,16\mathrm{.}0,6,14\mathrm{.}8],[3,15\mathrm{.}5,7,14\mathrm{.}0],[4,16\mathrm{.}4,8,17\mathrm{.}3]]$

$($a$)(4$ points$)$ What is the value of $\stackrel{}{x}?$ You must show final answer only.

$\frac{?}{\text{b}\text{a}\text{r}}(\stackrel{}{x})=$

$($b$)(6$ points$)$ Develop $\stackrel{}{x}$ Chart. In this case. $=1\mathrm{.}3.$ Determine USL and LSL$.$ You must show final answer only.

$US{L}_{\stackrel{}{x}}=$

$LS{L}_{\stackrel{}{x}}=$