Exhibit 13.1 The Following Questions Are Based on the Output Below

question 83

Multiple Choice

Exhibit 13.1
The following questions are based on the output below.
A store currently operates its service system with 1 operator. Arrivals follow a Poisson distribution and service times are exponentially distributed. The following spreadsheet has been developed for the system.
-Refer to Exhibit 13.1. How many customers will be in the store on average at any one time?

• A) 0.375
• B) 0.50
• C) 2.25
• D) 3.00

Familiarize with the syntax required to implement interfaces in classes, such as the use of `implements` keyword.

Appreciate the benefits and use cases of encapsulation, abstraction, and polymorphism through interfaces.

Identify the proper handling of exceptions, specifically in the context of method overriding and class inheriting from interfaces.

Recognize the role and benefits of helper classes and learn the appropriate use of access modifiers for inner classes aiming to serve as helper classes.