Wq $=($rho $^2)/($mu $*(1-$rho$))$;

rho $=$ lambda $/($mu$)$;

Lq $=$ lambda $*$ Wq;

Ws $=$ Wq $+1/$mu; $\%$ Average time in System

Ls $=$ Ws $*$ lambda;

plot$(1$:$21,$ Wq$)\%$ Probability that arrival must wait against thd number of servers

xlabel$(\text{'}$Number of Servers $($c$)\text{'})$

ylabel$(\text{'}$Average hold Lines$($Wq$)\text{'})$

xlim$([1\mathrm{.}522\mathrm{.}1])$

ylim$([-211\mathrm{.}87-209\mathrm{.}80])$Assignment $(5$ pts$).$ Create a plot of the probability of dropping a customer vs$.$ the number of call hold lines. The number of call hold lines should range from $1$ to $20.$ Set the number of customer service agents to the smallest value that meets requirements, see above.