Question $8$

A single$-$phase waiting$-$line system meets the assumptions of constant service time or M$/$D$/1.$ Units

arrive at this system every $15$ minutes on average. Service takes a constant $10$ minutes. What is the

average waiting time in queue, $W_q,$ in minutes?

$0\mathrm{.}67$

$2\mathrm{.}5$

$4\mathrm{.}5$

$5\mathrm{.}0$

$10$Would really appreciate the help $!$Question $4$

A container of gaming equipment valued at $$100,000,$ currently located in Tustin, CA$,$ needs to be

delivered to the Princeton, NJ$,$ plant. The annual holding cost rate for this type of item has been

estimated at $25\%.$ There are five carriers available. Their delivery time and cost are listed in the table

below. Which carrier is most economical?

Carrier A

Carrier B

Carrier C

Carrier D

Carrier E