ISYE 6644 ISYE 6644 Midterm

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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