ID Control Chart$3$

A manager wishes to build a $3-$sigma range chart for a process. The sample size is five, the mean of sample means is $28\mathrm{.}5,$ and the average range is $3\mathrm{.}9.$ Refer to Table S$6\mathrm{.}1$ in the textbook, for the appropriate values of D$3$ and D$4.$ What are the UCL and LCL$,$ respectively, for this range $($R$)$ chart?

$30\mathrm{.}75$ and $26\mathrm{.}25$

$40\mathrm{.}2$ and $16\mathrm{.}8$

$11\mathrm{.}2$ and $0$

$8\mathrm{.}25$ and $0$

QUESTION $5$

ID Crossover$2$

A firm is about to undertake the manufacture of a product, and it is weighing the process configuration options. There are two intermittent processes under consideration, as well as a repetitive focus. The smaller intermittent process has fixed costs of $$4,300$ per month and variable costs of $$9$ per unit. The larger intermittent process has fixed costs of $$12,000$ per month and variable costs of $$2$ per unit. A repetitive focus plant has fixed costs of $$30,000$ per month and variable costs of $$0\mathrm{.}80$ per unit. At what output does the large intermittent process become cheaper than the sma

$1200$

$1100$

$35000$