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. 
-Which of the following is the typical operating characteristic for average time a unit spends waiting for service?
Definitions:
Interaction
The manner in which variables in a study or forces in a situation influence each other.
Work Experience
The practical knowledge or skills gained through direct involvement in jobs or tasks over a period of time.
Gender
Gender refers to the socially constructed roles, behaviors, expressions, and identities of girls, women, boys, men, and gender-diverse people, which can vary from society to society and can change over time.
Factorial Design
An experimental design used to evaluate the effects of two or more independent variables on a set of dependent variables.
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