OMIS 338 COMPREHENSIVE STUDY GUIDE
2026 FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ Describe Linear Trend Forecast.
Answer: -trend can be estimated using simple linear regression to fit a line to
a time series
◍ A shave, shoeshine, facial, and haircut are performed by a single operator
who rents booth space at a local barbershop with no magazines. While
anindustrial engineer waits his turn, he surreptitiously records the time for
each service for the four customers ahead of him. The engineer also ratesthe
performance of the operator and has recorded all this information in the
following table. All times are in minutes. What is the standard time for the
entire barbershop experience if the allowance factor is 10 percent?.
Answer: Observed time = sum time/cyclesNT= sum of
OT*RatingsAF=10%ST=NT*(1+AF)
◍ Reduce cost and materials (value analysis).
Answer: examination of the function of parts and materials in an effort to
reduce the cost and/or improve the performance of a product
◍ structural variation in demand.
Answer: these are generally predictable, important for capacity planning
◍ Harlose Suits owns more equipment than required for manufacturing goods
during periods of regular demand in order to tackle sudden demand surges.
It also has a certain reserve of produced goods to tackle material shortages.
In this case, the reserve of equipment and produced goods are examples of
_____..
Answer: the capacity cushion
,◍ Cons of Dedicated Project Team.
Answer: 1.) expensive2.) internal strife3.) limited technological expertise4.)
difficult post-project transition
◍ Services.
Answer: activities that provide some combination of time, location, form, or
psychological value (ex. air travel, education, haircut, legal counsel)
◍ What term means the willingness to help customers and provide prompt
recovery to service upsets?.
Answer: Responsiveness
◍ Which dimension of sustainability does a green advocacy group represent?
A. Social
B. Environmental
C. Business
D. Economic.
Answer: B. Environmental
◍ The vaccination clinic was enjoying record demand during the flu season.
Its five nurses could verify patient information and administer a shot in five
minutes, while patients poured into the center at the rate of 50 people per
hour. What is the average number of patients waiting in line to receive a
shot?.
Answer: To determine the average time a patient spends in the system at the
vaccination clinic, we can use queuing theory formula which connects the
arrival rate (λ), service rate (μ), and the number of servers (s). In this case,
the arrival rate is 50 people per hour, and one nurse can attend to a patient in
5 minutes, meaning the service rate of one nurse is 12 patients per hour.
With five nurses, μ is 5 times 12, which is 60 patients per hour.Since λ is
less than μ (50 < 60), we are in a 'stable' system where the queue will not
grow indefinitely. The average time a patient spends in the system is the
reciprocal of the difference between the service rate and the arrival rate.
This time can be calculated using the Little's Law formula L = λ * W, where
L is the average number of people in the system and W is the average
, waiting time in the system.We can solve for W by rearranging Little's Law
to W = L / λ. Given that L = 50 / (60 - 50) = = 5, we can then
compute W as patients per hour, which results in an average of 0.1
hour per patient or 6 minutes (0.1 hour x 60 minutes/hour).There is an error
in the multiple-choice options provided, as none of them matches the
calculated average time of 6 minutes. The correct answer is option d. 5
minutes.
◍ Describe Exponential Smoothing Forecast.
Answer: Type of weighted moving average, with only two data points
needed
◍ In the context of sequencing, the time needed to process a given set of jobs
is called.
Answer: makespan.
◍ Which of the following refers to acquiring capabilities toward distribution,
or even customers?.
Answer: Forward integration
◍ The rocket widget for Guinness is made using a 12-step process with task
names and durations (in minutes) as shown in the following table. The goal
of the line is to produce 40 rocket widgets in an 8-hour shift.Use the longest
operation time to assign tasks to workstations. What is the minimum balance
delay?.
Answer: 14.6%
◍ In the context of measuring supply chain performance, the goal of
sustainability measures is to.
Answer: have a carbon-neutral supply chain.
◍ What processes are organized around particular types of general-purpose
equipment that are flexible and capable of customizing work for individual
customers?.
Answer: Job shop
◍ Consider four departments—A, B, C, and D—located in adjacent offices on
2026 FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ Describe Linear Trend Forecast.
Answer: -trend can be estimated using simple linear regression to fit a line to
a time series
◍ A shave, shoeshine, facial, and haircut are performed by a single operator
who rents booth space at a local barbershop with no magazines. While
anindustrial engineer waits his turn, he surreptitiously records the time for
each service for the four customers ahead of him. The engineer also ratesthe
performance of the operator and has recorded all this information in the
following table. All times are in minutes. What is the standard time for the
entire barbershop experience if the allowance factor is 10 percent?.
Answer: Observed time = sum time/cyclesNT= sum of
OT*RatingsAF=10%ST=NT*(1+AF)
◍ Reduce cost and materials (value analysis).
Answer: examination of the function of parts and materials in an effort to
reduce the cost and/or improve the performance of a product
◍ structural variation in demand.
Answer: these are generally predictable, important for capacity planning
◍ Harlose Suits owns more equipment than required for manufacturing goods
during periods of regular demand in order to tackle sudden demand surges.
It also has a certain reserve of produced goods to tackle material shortages.
In this case, the reserve of equipment and produced goods are examples of
_____..
Answer: the capacity cushion
,◍ Cons of Dedicated Project Team.
Answer: 1.) expensive2.) internal strife3.) limited technological expertise4.)
difficult post-project transition
◍ Services.
Answer: activities that provide some combination of time, location, form, or
psychological value (ex. air travel, education, haircut, legal counsel)
◍ What term means the willingness to help customers and provide prompt
recovery to service upsets?.
Answer: Responsiveness
◍ Which dimension of sustainability does a green advocacy group represent?
A. Social
B. Environmental
C. Business
D. Economic.
Answer: B. Environmental
◍ The vaccination clinic was enjoying record demand during the flu season.
Its five nurses could verify patient information and administer a shot in five
minutes, while patients poured into the center at the rate of 50 people per
hour. What is the average number of patients waiting in line to receive a
shot?.
Answer: To determine the average time a patient spends in the system at the
vaccination clinic, we can use queuing theory formula which connects the
arrival rate (λ), service rate (μ), and the number of servers (s). In this case,
the arrival rate is 50 people per hour, and one nurse can attend to a patient in
5 minutes, meaning the service rate of one nurse is 12 patients per hour.
With five nurses, μ is 5 times 12, which is 60 patients per hour.Since λ is
less than μ (50 < 60), we are in a 'stable' system where the queue will not
grow indefinitely. The average time a patient spends in the system is the
reciprocal of the difference between the service rate and the arrival rate.
This time can be calculated using the Little's Law formula L = λ * W, where
L is the average number of people in the system and W is the average
, waiting time in the system.We can solve for W by rearranging Little's Law
to W = L / λ. Given that L = 50 / (60 - 50) = = 5, we can then
compute W as patients per hour, which results in an average of 0.1
hour per patient or 6 minutes (0.1 hour x 60 minutes/hour).There is an error
in the multiple-choice options provided, as none of them matches the
calculated average time of 6 minutes. The correct answer is option d. 5
minutes.
◍ Describe Exponential Smoothing Forecast.
Answer: Type of weighted moving average, with only two data points
needed
◍ In the context of sequencing, the time needed to process a given set of jobs
is called.
Answer: makespan.
◍ Which of the following refers to acquiring capabilities toward distribution,
or even customers?.
Answer: Forward integration
◍ The rocket widget for Guinness is made using a 12-step process with task
names and durations (in minutes) as shown in the following table. The goal
of the line is to produce 40 rocket widgets in an 8-hour shift.Use the longest
operation time to assign tasks to workstations. What is the minimum balance
delay?.
Answer: 14.6%
◍ In the context of measuring supply chain performance, the goal of
sustainability measures is to.
Answer: have a carbon-neutral supply chain.
◍ What processes are organized around particular types of general-purpose
equipment that are flexible and capable of customizing work for individual
customers?.
Answer: Job shop
◍ Consider four departments—A, B, C, and D—located in adjacent offices on
