process control method. The accompnaying table shows the results of five different samples of$$ walk$-$in coolers that were produced in the previous month. The upper control limit for the$$ x$-$bar chart with three sigma limits$$ is:

Sample $1$

Sample $2$

Sample $3$

Sample $4$

Sample $5$

Observation $1$

$104\mathrm{.}0$

$100\mathrm{.}1$

$101\mathrm{.}1$

$102\mathrm{.}0$

$102\mathrm{.}7$

Observation $2$

$106\mathrm{.}4$

$104\mathrm{.}4$

$100\mathrm{.}4$

$105\mathrm{.}9$

$105\mathrm{.}4$

Observation $3$

$101\mathrm{.}8$

$103\mathrm{.}6$

$103\mathrm{.}0$

$104\mathrm{.}6$

$106\mathrm{.}1$

Observation $4$

$105\mathrm{.}6$

$101\mathrm{.}4$

$101\mathrm{.}0$

$102\mathrm{.}1$

$102\mathrm{.}5$

Observation $5$

$100\mathrm{.}6$

$100\mathrm{.}7$

$104\mathrm{.}9$

$107\mathrm{.}0$

$102\mathrm{.}0$

LOADING... Click the icon to view the table of factors for calculating$$ three$-$sigma limits for the x overbarx$-$chart.

A$.$

$102\mathrm{.}3$

B$.$

$105\mathrm{.}9$

C$.$

$103\mathrm{.}7$

D$.$

$103\mathrm{.}2$