ISYE 6644 / ISYE 6644 Midterm Exam 1 (Latest Update 2025 / 2026) Simulation and Modeling for Engineering and Science | Questions & Answers | Grade A | 100% Correct - Georgia Tech
Question:
TRUE or FALSE? The length of a confidence interval increases as you demand higher confidence (larger 1 - ∞).
Answer:
True
Question:
TRUE or FALSE? A 95% confidence interval means that you are 95% sure that the true parameter lies somewhere in the interior of the interval.
Answer:
True
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Question:
Which step is ��� essential for a successful simulation study?
A). Problem formulation B). Model validation
- experimental design
- output analysis
- attendance at the university of georgia
Answer:
- attendance at the university of georgia
Question:
What is an entity in a simulation?
Answer:
Entities can be permanent (like a machine), or temporary like customers, and can have various properties or attributes (priority of a customer or averaged speed of a server).
Question:
What is a system?
Answer:
A system is a collection of entities that interact together to accomplish a goal. 2 / 4
Question:
What is a model?
Answer:
A model is an abstract representation of a system.
Question:
What is the system state?
Answer:
A set of variables that contains enough information to describe the system.Think of the state as a snapshot of the system?
ex knowing how many people are in the queue and if the server is busy for a single server queue model
Question:
What is a list (or queue)?
Answer:
an ordered list of associated entities (for instance, a linked list, or a line of people).
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Question:
What is an event?
Answer:
An event is a point in time at which the system state changes (and which can't be predicted with certainty beforehand).
Ex: an arrival event, a departure event, a machine breakdown event.
Question:
What is an activity?
Answer:
An activity is a duration of time of specified length (aka an unconditional wait)
ex: constant service times, customer interarrival times.
Question:
What is a conditional wait?
Answer:
A conditional wait is a duration of time of unspecified length.
ex: customer waiting time.
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