Brs Mdm3 Tif Ch09
Topics: Poisson distribution / Pages: 16 (2979 words) / Published: Jan 11th, 2015

Managerial Decision Modeling w/ Spreadsheets, 3e (Balakrishnan/Render/Stair)
Chapter 9 Queuing Models

9.1 Chapter Questions

1) Reneging refers to customers who:
A) do not join a queue
B) switch queues
C) join a queue but abandon their shopping carts before checking out
D) join a queue but are dissatisfied
E) join a queue and complain because of long lines
Answer: C
Page Ref: 371
Topic: Characteristics of a Queuing System
Difficulty: Moderate

2) This queuing system configuration is referred to as a:

A) single-server, multiphase system
B) multiple-server, multiphase system
C) multiple-server, single-phase system
D) single-server, single-phase system
E) single-server, parallel phase system
Answer: D
Page Ref: 373
Topic: Characteristics of a Queuing System
Difficulty: Moderate
3) This queuing system configuration is referred to as a:

A) single-server, multiphase system
B) multiple-server, multiphase system
C) multiple-server, single-phase system
D) single-server, single-phase system
E) single-server, parallel phase system
Answer: C
Page Ref: 373
Topic: Characteristics of a Queuing System
Difficulty: Moderate

4) The average time each customer spends in the queue is referred to as:
A) W
B) Wq
C) L
D) Lq
E) ρ
Answer: B
Page Ref: 377
Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model)
Difficulty: Moderate
5) In a drive-in fast food restaurant, customers form a single lane, place their order and pay their bill at one window, and then pick up their food at a second window. This queuing configuration is referred to as:
A) single-server, multiphase system
B) multiple-server, multiphase system
C) multiple-server, single-phase system
D) single-server, single-phase system
E) single-server, parallel phase system
Answer: A
Page Ref: 373
Topic: Characteristics of a Queuing System
Difficulty: Moderate

6) A beauty salon employs three hairdressers. All customers get their hair washed in one area of the

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