$5.$ Repeat Problem $1,$ except for an M$/$M$/3$ queue with mean interarrival time $1\mathrm{.}25$ minutes

and mean service time $3$ minutes at each of the three servers. Hint: You might want to

consider creating a computer program or spreadsheet, or use mmc$.$exe.

$6.$ In Problem $5,$ increase the arrival rate in the same steps as in Problem $4,$ and again evaluate

all of Wq$,$ W$,$ Lq$,$ L$,$ and $\backslash$rho at each step. Continue incrementing the arrival rate in $1\%$ steps

until you reach $100\%$ over the original rate $($i$.$e$.,$ doubling the rate$)$ and adding servers as

necessary $($but keeping the minimum number of servers to achieve stability$).$