Exhibit 12.5 The Following Questions Use the Information Below

question 5

Multiple Choice

Exhibit 12.5
The following questions use the information below.
The owner of Sal's Italian Restaurant wants to study the growth of his business using simulation. He is interested in simulating the number of customers and the amount ordered by customers each month. He currently serves 1000 customers per month and feels this can vary uniformly between a decrease of as much as 5% and an increase of up to 9%. The bill for each customer is a normally distributed random variable with a mean of $20 and a standard deviation of $5. The average order has been increasing steadily over the years and the owner expects the mean order will increase by 2% per month. You have created the following spreadsheet to simulate the problem.
-Which of the following best describes queuing theory?

• A) The study of arrival rates.
• B) The study of service times.
• C) The study of waiting lines.
• D) The evaluation of service time costs.

---

Definitions:

Simplify

The process of reducing a mathematical expression or problem to its most basic form.

Collect Like Terms

The process of simplifying algebraic expressions by combining terms that have the same variables raised to the same power.

Operation Indicated

The specific mathematical operation suggested or required by a problem or equation.

Simplify

To reduce something to its simplest form or most basic elements.