Chapter 18, Problem 2P

a)

Summary Introduction

To determine: Average number of customers waiting in line (L_q).

Queuing theory: It is a mathematical study of queues or waiting lines. Using queuing model, length of a queue and waiting time can be determined.  In operations management, queuing theory is used for decision making about the resources required to offer services.

b)

Summary Introduction

To determine: Average time customers spend in the system (hours).

c)

Summary Introduction

To determine: The average number of customers in the system (L_s).