Assignment $(5$ pts$).$ Using the MMCQ function you developed create a plot of hold time $($Wq$)$ as a function of the number of service agents. Start at the smallest value number of agents and stop at the minimum plus $20.$ Hint: recall that must hold. For this plot assume there are fifteen hold lines. lambda $=2$; $\%$ Arrival rate: $2$ calls per minute

mu $=0\mathrm{.}1$; $\%$ Service rate: $0\mathrm{.}1$ calls per minute per agent

$\%$ Assuming an initial number of agents for the calculation

rho $=$ lambda $/$ mu;