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:*…show more content…*

What is the probability that the service facility will be idle? A) 0.23 B) 0.70 C) 0.33 D) 0.30 E) 0.233 Answer: D Page Ref: 377 Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model) Difficulty: Moderate AACSB: Analytic Skills 12) Refer to the table. What percent of the time is the server busy? A) 10% B) 33% C) 23% D) 70% E) 30% Answer: D Page Ref: 377 Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model) Difficulty: Moderate AACSB: Analytic Skills 13) Refer to the table. What is the average number of customers in the queue plus the number being served? A) 0.70 B) 2.33 C) 1.63 D) 0.23 E) 0.33 Answer: B Page Ref: 377 Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model) Difficulty: Moderate AACSB: Analytic Skills 14) Refer to the table. What is the average time a customer spends waiting in line and being served? A) 0.23 B) 2.33 C) 0.33 D) 1.63 E) 0.70 Answer: C Page Ref: 377 Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model) Difficulty: Moderate AACSB: Analytic Skills 15) Refer to the table. What is the average number of customers waiting to be served? A) 0.23 B) 2.33 C) 0.33

What is the probability that the service facility will be idle? A) 0.23 B) 0.70 C) 0.33 D) 0.30 E) 0.233 Answer: D Page Ref: 377 Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model) Difficulty: Moderate AACSB: Analytic Skills 12) Refer to the table. What percent of the time is the server busy? A) 10% B) 33% C) 23% D) 70% E) 30% Answer: D Page Ref: 377 Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model) Difficulty: Moderate AACSB: Analytic Skills 13) Refer to the table. What is the average number of customers in the queue plus the number being served? A) 0.70 B) 2.33 C) 1.63 D) 0.23 E) 0.33 Answer: B Page Ref: 377 Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model) Difficulty: Moderate AACSB: Analytic Skills 14) Refer to the table. What is the average time a customer spends waiting in line and being served? A) 0.23 B) 2.33 C) 0.33 D) 1.63 E) 0.70 Answer: C Page Ref: 377 Topic: Single-Server Queuing System With Poisson Arrivals and Exponential Service Times (M/M/1 Model) Difficulty: Moderate AACSB: Analytic Skills 15) Refer to the table. What is the average number of customers waiting to be served? A) 0.23 B) 2.33 C) 0.33

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