Problem $11-21($Algorithmic$)$ TABLE $11\mathrm{.}4$ VALUES OF $P_0$ FOR MULTIPLE$-$SERVER WAITING LINES WITH POISSON

ARRIVALS AND EXPONENTIAL SERVICE TIMES

Agan Interior Design provides home and office decorating assistance to its customers. In normal operation, an average of $2\mathrm{.}1$ customers arrive each hour. One design consultant is available to answer customer questions and make product recommendations. Agan's management would like to evaluate two alternatives:

Use one consultant with an average service time of $8$ minutes per customer.

Expand to two consultants, each of whom has an average service time of $10$ minutes per customer.

Consultants are paid $$14$ per hour and the customer waiting time is valued at $$22$ per hour for waiting time prior to service.

The total cost for the first scenario where there is one consultant with an average service time of $8$ minutes per customer is $ $\_\_\_\_\_.$ The total cost for the second scenario where there are two consultants with an average service time of $10$ minutes per customer is $$\_\_\_\_\_\_\_.$

Note: Use P$0$ values from Table $11\mathrm{.}4$ to answer the questions below.