$8\mathrm{.}5.$ Consider two different machines A and B that could be used at a station. Machine A has a

mean effective process time $$ of $1\mathrm{.}0$ hours and an SCV $2$ of $0\mathrm{.}25.$ Machine B has a mean

effective process time of $0\mathrm{.}85$ hour and an SCV of $4.($Hint: You may find a simple spreadsheet

helpful in making the calculations required to answer the following questions$)$