Exhibit 12.5 The Following Questions Use the Information Below

question 70

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.
-What is the service policy in the queuing systems presented in this chapter that is considered "fair" by the customers?

• A) FIFO
• B) LIFO
• C) FILO
• D) Priority

---

Definitions:

Expected Frequencies

The anticipated count of occurrences in each category of a variable, calculated under a specific hypothesis in a chi-square test.

Shape

Describes the geometric or visual characteristics of an object or distribution, such as symmetry, skewness, or roundness.

Multinomial Experiment

An experiment consisting of a fixed number of trials where each trial has multiple possible outcomes.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists within a set of given observations or parameters.