Question content area

Part $1$

A$$ single$-$server service facility had the capacity to serve $38$ customers per hour on average. The average customer demand was $31$ customers per hour.

Determine the average number of customers in the system.

Part $2$

A$.$

$11\mathrm{.}67$

B$.$

$1\mathrm{.}53$

C$.$

$2\mathrm{.}44$

D$.$

$4\mathrm{.}43$