Pasquist Water Company

$$

$($

PWC

$)$

$$operates a

$$

$2$

$4$

$-$

hour facility designed to efficiently fill

$$

$$water

$-$

hauling tanker trucks. Trucks arrive randomly to the facility and wait in line to access a wellhead pump. Since trucks vary in size and the filling operation is manually performed by the truck

$$

$$driver$,$ the time to fill a truck is also random.

Part

$2$

a

$.$

$$If the manager of PWC uses the

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$"$multiple

$-$

server model" to calculate the operating characteristics of the

$$

$$facility$\text{'}$s waiting

$$

$$line$,$ list three assumptions she must make regarding the behavior of waiting trucks and the truck arrival process.

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$($

Check all assumptions that

$$

$$apply$.$

$)$