S$6\mathrm{.}9$:

Organic Grains LLC uses statistical process control to ensure that its health$-$conscious, low$-$fat,

multigrain sandwich loaves have the proper weight. Based on a previously stable and in$-$control

process, the control limits of the Xbar and R$-$charts are $=6\mathrm{.}56,=5\mathrm{.}84,=$

$1\mathrm{.}141,=0$

Over the past few days, they have taken five random samples of four loaves each and have

found the following:

SAMPLE NET WEIGHT

LOAF #$1$LOAF #$2$LOAF #$3$LOAF #$4$

$16\mathrm{.}36\mathrm{.}05\mathrm{.}95\mathrm{.}9$

$26\mathrm{.}06\mathrm{.}06\mathrm{.}35\mathrm{.}9$

$36\mathrm{.}34\mathrm{.}85\mathrm{.}65\mathrm{.}2$

$46\mathrm{.}26\mathrm{.}06\mathrm{.}25\mathrm{.}9$

$56\mathrm{.}56\mathrm{.}66\mathrm{.}56\mathrm{.}9$

Is the process still in control? Explain why or why not.