SCM $300$

$$

EXERCISE #$3$

QUEUING MODELS

STEP $2$

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Questions using Data Provided in the Story

$($

$1$

Point

s

each$)$

Use the data

from your completed and accurate

excel file to

answer the following

questions. Enter your answers on the course website.

$1.$

What

is

the arrival rate?

$($Calls per minute$)$

$2.$

What

is

the service rate? $($Calls per minute$)$

$3.$

What percentage of the time is the server busy in a one

$-$

server model?

$4.$

What

percentage of the time is the server busy in a two

$-$

server model?

$5.$

What percentage of the time is the server busy in a three

$-$

server model?

$6.$

What is the probability the system is empty in a single

$-$

server model?

$7.$

What is the probability of exactly $2$ customers

in the system in a single

$-$

server

model?

$8.$

What is the probability of exactly $5$ customers in the system in a single

$-$

server

model?

$9.$

On average, how many customers are in the system in a single server model?

$10.$

On average, how many customers are in the line in a

single server mod