Question 1. 1.In a PERT network, the earliest (activity)
start time is the: (Points : 2)
earliest time that an activity can be finished without
delaying the entire project
latest time that an activity can be started without delaying
the entire project
earliest time that an activity can start without violation
of precedence requirements
latest time that an activity can be finished without
delaying the entire project
none of the above
Question 2. 2.Given an activity’s optimistic, most likely,
and pessimistic time estimates of 4, 12, and 18 days respectively, what is the
PERT variance for this activity? (Points : 2)
2.33
5.44
8.00
64.00
None of the above
Question 3. 3.The expected time in PERT is: (Points : 2)
a weighted average of the most optimistic time, most
pessimistic time, and four times the most likely time
the modal time of a beta distribution
a simple average of the most optimistic, most likely, and
most pessimistic times
the square root of the sum of the variances of the
activities on the critical path
none of the above
Question 4. 4.According to the table below, there are five
activities in a PERT project.
Click here to view a Word version of the table.
Using the data in the table, if the normal distribution were
used to find the probability of finishing this project in 24 weeks or fewer,
what mean and variance respectively would be used?
(Points : 2)
20; 4.222
30; 5.222
20; 5.222
30; 4.222
22.667; 1.111
Question 5. 5.The following table represents a project with
four activities. All times are in weeks.
Click here to view a Word version of the table.
Using the data in the table, what is the critical path?
(Points : 2)
A-B
A-C
B-D
A-B-C-D
None of the above
Question 6. 6.Bank Boston has a branch at Bryant College.
The branch is busiest at the beginning of the college year when freshmen and
transfer students open accounts. This year, freshmen arrived at the office at a
rate of 40 per day (assume 8-hour days). On average, it takes the Bank Boston
staff person about ten minutes to process each account application. The bank is
considering having one or two tellers. Each teller is paid $12 per hour and the
cost of waiting in line is assumed to be $8 per hour.
What is the average number of people waiting to open
accounts? (Points : 2)
3.27
4.16
5.27
5.83
Question 7. 7.A suburban specialty restaurant has developed
a single drive-thru window. Customers order, pay, and pick up their food at the
same window. Arrivals follow a Poisson distribution while service times follow
an exponential distribution. If the average number of arrivals is 6 per hour
and the service rate is 2 every 15 minutes, how much time will elapse (in
hours) from the time a customer enters the line until he/she leaves the
restaurant? (Points : 2)
0.50
0.25
0.75
2.25
3.00
Question 8. 8.A widely used mathematical programming
technique designed to help managers and decision making relative to resource
allocation is called __________. (Points : 2)
linear programming
computer programming
constraint programming
goal programming
None of the above
Question 9. 9.Consider the following linear programming
problem:
Maximize 12X + 10Y
Subject to:
4X + 3Y ? 480
2X + 3Y ? 360
all variables ? 0
The maximum possible value for the objective function is
__________. (Points:2)
360
480
1,520
1,560
none of the above
Question 10. 10.If items being transported must go through
an intermediate point before reaching a final destination, then this situation
is known as a(n) __________. (Points : 2)
transshipment problem
assignment problem
transportation problem
intermediate point problem
None of the above
Question 11. 11.Which of the following is not a popular
definition of quality? (Points : 2)
Quality is the totality of features and characteristics of a
product or service that bears on its ability to satisfy stated or implied
needs.
Quality is defined as a competitively priced product that
surpasses customer needs.
Quality is the degree to which a product conforms to design
or specification.
Quality is fitness for use.
Even though quality cannot be defined, you know what it is.
Question 12. 12.Variations that usually occur in a process
are called __________. (Points : 2)
process variations
natural variations
control variations
assignable variations
none of the above
Question 13. 13.A feasible solution to a linear programming
problem: (Points : 2)
must be a corner point of the feasible region.
must satisfy all of the problems constraints
simultaneously.
need not satisfy all of the constraints, only the
non-negativity constraints.
must give the maximum possible profit.
must give the minimum possible cost.
Question 14. 14.Click here to view a Word version of the
table.
To guarantee that cans of soup are properly filled, some
cans are sampled and the amounts measured. The overall average for the samples
is 12 ounces. Each sample contains 10 cans. The average range is 0.4 ounces.
Using the data in the table above, what is the lower control
chart limit for the sample averages? (Points : 2)
12.1232
11.8768
13.2
12.308
None of the above
Question 15. 15.Which of the following control charts is/are
for attributes? (Points : 2)
p-chart
x-bar chart
R-chart
A and B
A, B, and C
Question 16. 16.A certain firm has four different operations
that must be assigned to four locations. The profit (in thousands of dollars)
associated with each operation at each location is presented below. The firms
vice president would like to assign the various operations so that the total
profit is maximized. Find the appropriate assignments.
Click here to view an Excel version of the table.
Using the data in the table, what is the optimal location
for Operation Z? (Points : 2)
1
2
3
4
Question 17. 17.Given the table below, the final table for
an assignment problem, who should be assigned to Job 2?
Click here to view an Excel version of the table.
(Points : 2)
Worker A
Worker C
Either worker A or worker C
Neither worker A nor worker C
Worker D
Question 18. 18.A company believes a process monitored by an
x-bar chart to be in control. When the most recent control point exceeded the
UCL value by 20%, the company should: (Points : 2)
believe that a random bad luck chance occurred and proceed.
suspect that an assignable cause of variation now exists and
can be found.
ignore the control point completely, as it is simply an
outlier.
wait for the next four samples to be taken to see if a trend
develops.
none of the above.
Question 19. 19.Click here to view a Word version of the
table.
Bags of chocolate candy are sampled to ensure proper weight.
The overall average for the samples is 36 ounces. Each sample contains twelve
bags. The average range is 1.3 ounces.
Using the data in the table above, what is the lower control
chart limit for the sample averages? (Points : 2)
36.3730
36.4849
35.6270
35.5150
Question 20. 20.Consider the following linear programming
model:
Minimize 2X1 + 3X2
Subject to:
X1 + X2 ? 4
X1 ? 2
X1, X2 ? 0
This linear programming model has: (Points : 2)
a unique optimal solution.
an unbounded solution.
an infeasible solution.
an alternate optimal solution.
redundant constraints.
Question 21. 21.When using the shortest-route technique, the
second step is to: (Points : 2)
find the next-nearest node to the origin and put the
distance in a box by the node.
trace the path from the warehouse to the plant.
determine the average distance traveled from source to end.
find the nearest node to the origin and put a distance box
by the node.
None of the above is correct.
Question 22. 22.The shortest-route technique would best be
used to: (Points : 2)
assign workers to jobs in the cheapest manner.
determine the number of units to ship from each source to
each destination.
determine the amount of LAN network wiring within a
building.
minimize the amount of traffic flow on a busy highway.
determine the path for a truck making frequent but
repeatable drops.
Question 23. 23.The p-chart is useful when we: (Points : 2)
take a number of measurements and compute the average.
take a number of measurements and compute the ranges.
find the fraction of the production lot defective.
find the number of defective items in a production lot.
None of the above is correct.
Question 24. 24. A finite population model differs from an
infinite population model because there is a random relationship between the
length of the queue and the arrival rate. (Points : 2)
True
False
Question 25. 25.The wait time for a single-channel system is
more than twice that for a two-channel system using two servers working at the
same rate as the single server. (Points : 2)
True
False
Question 26. 26.The maximal-flow technique finds the maximum
flow of any quantity or substance through a network. (Points : 2)
True
False
Question 27. 27.Two characteristics of arrivals are the line
length and queue discipline. (Points : 2)
True
False
Question 28. 28.The points on the network are referred to as
nodes. (Points : 2)
True
False
Question 29. 29.In the maximal-flow technique, a zero (0)
means no flow or a one-way arc. (Points : 2)
True
False
Question 30. 30.Infeasibility in a linear programming
problem occurs when: (Points : 2)
there is an infinite solution.
a constraint is redundant.
more than one solution is optimal.
the feasible region is unbounded.
there is no solution that satisfies all the constraints
given.
Question 31. 31. A certain firm has four different
operations that must be assigned to four locations. The profit (in thousands of
dollars) associated with each operation at each location is presented below.
The firms vice president would like to assign the various operations so that
the total profit is maximized. Find the appropriate assignments.
Click here to view an Excel version of the table.
Using the data in the table, what is the optimal location
for Operation W? (Points : 2)
1
2
3
4
Question 32. 32.In a single-channel, single-phase system,
reducing the service time only reduces the total amount of time spent in the
system, not the time spent in the queue. (Points : 2)
True
False
Question 33. 33.A company can decide how many additional
labor hours to acquire for a given week. Subcontractor workers will only work a
maximum of 20 hours a week. The company must produce at least 200 units of
product A, 300 units of product B, and 400 units of product C. In 1 hour of
work, worker 1 can produce 15 units of product A, 10 units of product B, and 30
units of product C. Worker 2 can produce 5 units of product A, 20 units of
product B, and 35 units of product C. Worker 3 can produce 20 units of product
A, 15 units of product B, and 25 units of product C. Worker 1 demands a salary
of $50/hr, worker 2 demands a salary of $40/hr, and worker 3 demands a salary
of $45/hr. The company must choose how many hours they should contract with
each worker to meet their production requirements and minimize labor cost.
Assuming this is a linear programming problem, which of the
following is the optimal solution? (Points : 2)
X1 = 7.69; X2 = 0; X3 = 9.23
X1 = 0; X2 = 7.69; X3 = 9.23
X1 = 0; X2 = 9.23; X3 = 7.69
X1 = 9.23; X2 = 7.69; X3 = 0
Question 34. 34.A company must assign mechanics to each of
four jobs.
Click here to view an Excel version of the table.
The time involved varies according to individual abilities.
The table shows how many minutes it takes each mechanic to perform each job. If
the optimal assignments are made, how many total minutes would be required for
completing the jobs? (Points : 2)
0
4
17
16
None of the above
Question 35. 35.The customer who arrives at a bank, sees a
long line, and leaves to return another time is __________. (Points : 2)
balking
cropping
reneging
blithering
none of the above.
uestion 36. 36.Two models of a product Regular (X) and
Deluxe (Y) are produced by a company. A linear programming model is used to
determine the production schedule. The formulation is as follows:
Maximize profit = 50X + 60Y
Subject to:
8X + 10Y ? 800 (labor hours)
X + Y ? 120 (total units demanded)
4X = 5Y ? 500 (raw materials)
all variables ? 0
The optimal solution is X = 100, Y = 0.
How many units of the regular model would be produced based
on this solution? (Points : 2)
0
100
50
120
None of the above
Question 37. 37.In PERT, we assume that: (Points : 2)
the times to complete individual activities are known with
certainty.
all activities are carried out by staff from our own
organization.
the total cost of a project is independent of the time to
complete the project.
the total time to complete all activities on the critical
path is described by a normal distribution.
none of the above.
Question 38. 38.The difference between the left-hand side
and right-hand side of a greater-than-or-equal-to constraint is referred to as
__________. (Points : 2)
surplus
constraint
slack
shadow price
none of the above
Question 39. 39.A suburban specialty restaurant has
developed a single drive-thru window. Customers order, pay, and pick up their
food at the same window. Arrivals follow a Poisson distribution while service
times follow an exponential distribution. If the average number of arrivals is
6 per hour and the service rate is 2 every 15 minutes, what proportion of the
time is the server busy? (Points : 2)
0.25
0.50
0.75
2.25
3.00
Question 40. 40.Which of the following is not an assumption
of LP? (Points : 2)
Simultaneity
Certainty
Proportionality
Divisibility
Additivity
Question 41. 41.Practically speaking, multiple optimal
solutions __________. (Points : 2)
are infeasible
are unbounded
are degenerate
are unbalanced
provide management with greater flexibility in selecting and
using resources
Question 42. 42.Cars arrive at a local JLUBE franchise at
the rate of 1 every 12 minutes. Service times are exponentially distributed
with an average of 15 minutes. Jack Burns, the JLUBE owner, has decided to open
a second work bay, i.e., make the shop into a two-channel system. Under this
new scheme, the total time an average customer spends in the system will be
(Points : 2)
37 minutes.
2.1 minutes.
9.6 minutes.
33.3 minutes.
24.6 minutes.
Question 43. 43.An automatic car wash is an example of a
constant service time model. (Points : 2)
True
False
Question 44. 44.Customers enter the waiting line to pay for
food as they leave a cafeteria on a first-come, first-served basis. The arrival
rate follows a Poisson distribution, while service times follow an exponential
distribution. If the average number of arrivals is four per minute and the
average service rate of a single server is seven per minute, on average, how
much time will elapse from the time a customer enters the line until he/she
leaves the cafeteria? (Points : 2)
0.67 minute
0.50 minute
0.75 minute
0.33 minute
1.33 minutes
Question 45. 45.A certain firm has four different operations
that must be assigned to four locations. The profit (in thousands of dollars)
associated with each operation at each location is presented below. The firms
vice president would like to assign the various operations so that the total
profit is maximized. Find the appropriate assignments.
Click here to view an Excel version of the table.
Using the data in the table, what is the optimal location
for Operation X? (Points : 2)
1
2
3
4
Question 46. 46.Which of the following is not a property of
all linear programming problems? (Points : 2)
The presence of restrictions
Optimization of some objective
A computer program
Alternate courses of action to choose from
Usage of only linear equations and inequalities
Question 47. 47.Typical resources of an organization include
__________. (Points : 2)
machinery usage
labor volume
warehouse space utilization
raw material usage
all of the above
Question 48. 48.Assume that we are using a waiting line
model to analyze the number of service technicians required to maintain
machines in a factory. Our goal should be to: (Points : 2)
maximize productivity of the technicians.
minimize the number of machines needing repair.
minimize the downtime for individual machines.
minimize the percent of idle time of the technicians.
minimize the total cost (cost of maintenance plus cost of
downtime).
Question 49. 49.The shortest-route technique might be
logically used for: (Points : 2)
finding the longest time to travel between two points.
finding the shortest travel distance between two points.
finding the most scenic route to allow travel to several
places during a trip on spring break.
connecting all the points of a network together while
minimizing the distance between them.
none of the above.
Question 50. 50.The c-chart is useful when we: (Points : 2)
take a number of measurements and compute the average.
take a number of measurements and compute the ranges.
find the fraction of the production lot defective.
find the number of defective items in a production lot.
None of the above is correct
Question 1. 1.In a PERT network, the earliest (activity)
start time is the: (Points : 2)earliest time that an activity can be finished without
delaying the entire projectlatest time that an activity can be started without delaying
the entire projectearliest time that an activity can start without violation
of precedence requirementslatest time that an activity can be finished without
delaying the entire projectnone of the aboveQuestion 2. 2.Given an activity’s optimistic, most likely,
and pessimistic time estimates of 4, 12, and 18 days respectively, what is the
PERT variance for this activity? (Points : 2)2.335.448.0064.00None of the aboveQuestion 3. 3.The expected time in PERT is: (Points : 2)a weighted average of the most optimistic time, most
pessimistic time, and four times the most likely timethe modal time of a beta distributiona simple average of the most optimistic, most likely, and
most pessimistic timesthe square root of the sum of the variances of the
activities on the critical pathnone of the aboveQuestion 4. 4.According to the table below, there are five
activities in a PERT project.Click here to view a Word version of the table.Using the data in the table, if the normal distribution were
used to find the probability of finishing this project in 24 weeks or fewer,
what mean and variance respectively would be used?(Points : 2)20; 4.22230; 5.22220; 5.22230; 4.22222.667; 1.111Question 5. 5.The following table represents a project with
four activities. All times are in weeks.Click here to view a Word version of the table.Using the data in the table, what is the critical path?(Points : 2)A-BA-CB-DA-B-C-DNone of the aboveQuestion 6. 6.Bank Boston has a branch at Bryant College.
The branch is busiest at the beginning of the college year when freshmen and
transfer students open accounts. This year, freshmen arrived at the office at a
rate of 40 per day (assume 8-hour days). On average, it takes the Bank Boston
staff person about ten minutes to process each account application. The bank is
considering having one or two tellers. Each teller is paid $12 per hour and the
cost of waiting in line is assumed to be $8 per hour.What is the average number of people waiting to open
accounts? (Points : 2)3.274.165.275.83Question 7. 7.A suburban specialty restaurant has developed
a single drive-thru window. Customers order, pay, and pick up their food at the
same window. Arrivals follow a Poisson distribution while service times follow
an exponential distribution. If the average number of arrivals is 6 per hour
and the service rate is 2 every 15 minutes, how much time will elapse (in
hours) from the time a customer enters the line until he/she leaves the
restaurant? (Points : 2)0.500.250.752.253.00Question 8. 8.A widely used mathematical programming
technique designed to help managers and decision making relative to resource
allocation is called __________. (Points : 2)linear programmingcomputer programmingconstraint programminggoal programmingNone of the aboveQuestion 9. 9.Consider the following linear programming
problem:Maximize 12X + 10YSubject to:4X + 3Y ? 4802X + 3Y ? 360all variables ? 0The maximum possible value for the objective function is
__________. (Points:2)3604801,5201,560none of the aboveQuestion 10. 10.If items being transported must go through
an intermediate point before reaching a final destination, then this situation
is known as a(n) __________. (Points : 2)transshipment problemassignment problemtransportation problemintermediate point problemNone of the aboveQuestion 11. 11.Which of the following is not a popular
definition of quality? (Points : 2)Quality is the totality of features and characteristics of a
product or service that bears on its ability to satisfy stated or implied
needs.Quality is defined as a competitively priced product that
surpasses customer needs.Quality is the degree to which a product conforms to design
or specification.Quality is fitness for use.Even though quality cannot be defined, you know what it is.Question 12. 12.Variations that usually occur in a process
are called __________. (Points : 2)process variationsnatural variationscontrol variationsassignable variationsnone of the aboveQuestion 13. 13.A feasible solution to a linear programming
problem: (Points : 2)must be a corner point of the feasible region.must satisfy all of the problems constraints
simultaneously.need not satisfy all of the constraints, only the
non-negativity constraints.must give the maximum possible profit.must give the minimum possible cost.Question 14. 14.Click here to view a Word version of the
table.To guarantee that cans of soup are properly filled, some
cans are sampled and the amounts measured. The overall average for the samples
is 12 ounces. Each sample contains 10 cans. The average range is 0.4 ounces.Using the data in the table above, what is the lower control
chart limit for the sample averages? (Points : 2)12.123211.876813.212.308None of the aboveQuestion 15. 15.Which of the following control charts is/are
for attributes? (Points : 2)p-chartx-bar chartR-chartA and BA, B, and CQuestion 16. 16.A certain firm has four different operations
that must be assigned to four locations. The profit (in thousands of dollars)
associated with each operation at each location is presented below. The firms
vice president would like to assign the various operations so that the total
profit is maximized. Find the appropriate assignments.Click here to view an Excel version of the table.Using the data in the table, what is the optimal location
for Operation Z? (Points : 2)1234Question 17. 17.Given the table below, the final table for
an assignment problem, who should be assigned to Job 2?Click here to view an Excel version of the table.(Points : 2)Worker AWorker CEither worker A or worker CNeither worker A nor worker CWorker DQuestion 18. 18.A company believes a process monitored by an
x-bar chart to be in control. When the most recent control point exceeded the
UCL value by 20%, the company should: (Points : 2)believe that a random bad luck chance occurred and proceed.suspect that an assignable cause of variation now exists and
can be found.ignore the control point completely, as it is simply an
outlier.wait for the next four samples to be taken to see if a trend
develops.none of the above.Question 19. 19.Click here to view a Word version of the
table.Bags of chocolate candy are sampled to ensure proper weight.
The overall average for the samples is 36 ounces. Each sample contains twelve
bags. The average range is 1.3 ounces.Using the data in the table above, what is the lower control
chart limit for the sample averages? (Points : 2)36.373036.484935.627035.5150Question 20. 20.Consider the following linear programming
model:Minimize 2X1 + 3X2Subject to:X1 + X2 ? 4X1 ? 2X1, X2 ? 0This linear programming model has: (Points : 2)a unique optimal solution.an unbounded solution.an infeasible solution.an alternate optimal solution.redundant constraints.Question 21. 21.When using the shortest-route technique, the
second step is to: (Points : 2)find the next-nearest node to the origin and put the
distance in a box by the node.trace the path from the warehouse to the plant.determine the average distance traveled from source to end.find the nearest node to the origin and put a distance box
by the node.None of the above is correct.Question 22. 22.The shortest-route technique would best be
used to: (Points : 2)assign workers to jobs in the cheapest manner.determine the number of units to ship from each source to
each destination.determine the amount of LAN network wiring within a
building.minimize the amount of traffic flow on a busy highway.determine the path for a truck making frequent but
repeatable drops.Question 23. 23.The p-chart is useful when we: (Points : 2)take a number of measurements and compute the average.take a number of measurements and compute the ranges.find the fraction of the production lot defective.find the number of defective items in a production lot.None of the above is correct.Question 24. 24. A finite population model differs from an
infinite population model because there is a random relationship between the
length of the queue and the arrival rate. (Points : 2)TrueFalseQuestion 25. 25.The wait time for a single-channel system is
more than twice that for a two-channel system using two servers working at the
same rate as the single server. (Points : 2)TrueFalseQuestion 26. 26.The maximal-flow technique finds the maximum
flow of any quantity or substance through a network. (Points : 2)TrueFalseQuestion 27. 27.Two characteristics of arrivals are the line
length and queue discipline. (Points : 2)TrueFalseQuestion 28. 28.The points on the network are referred to as
nodes. (Points : 2)TrueFalseQuestion 29. 29.In the maximal-flow technique, a zero (0)
means no flow or a one-way arc. (Points : 2)TrueFalseQuestion 30. 30.Infeasibility in a linear programming
problem occurs when: (Points : 2)there is an infinite solution.a constraint is redundant.more than one solution is optimal.the feasible region is unbounded.there is no solution that satisfies all the constraints
given.Question 31. 31. A certain firm has four different
operations that must be assigned to four locations. The profit (in thousands of
dollars) associated with each operation at each location is presented below.
The firms vice president would like to assign the various operations so that
the total profit is maximized. Find the appropriate assignments.Click here to view an Excel version of the table.Using the data in the table, what is the optimal location
for Operation W? (Points : 2)1234Question 32. 32.In a single-channel, single-phase system,
reducing the service time only reduces the total amount of time spent in the
system, not the time spent in the queue. (Points : 2)TrueFalseQuestion 33. 33.A company can decide how many additional
labor hours to acquire for a given week. Subcontractor workers will only work a
maximum of 20 hours a week. The company must produce at least 200 units of
product A, 300 units of product B, and 400 units of product C. In 1 hour of
work, worker 1 can produce 15 units of product A, 10 units of product B, and 30
units of product C. Worker 2 can produce 5 units of product A, 20 units of
product B, and 35 units of product C. Worker 3 can produce 20 units of product
A, 15 units of product B, and 25 units of product C. Worker 1 demands a salary
of $50/hr, worker 2 demands a salary of $40/hr, and worker 3 demands a salary
of $45/hr. The company must choose how many hours they should contract with
each worker to meet their production requirements and minimize labor cost.Assuming this is a linear programming problem, which of the
following is the optimal solution? (Points : 2)X1 = 7.69; X2 = 0; X3 = 9.23X1 = 0; X2 = 7.69; X3 = 9.23X1 = 0; X2 = 9.23; X3 = 7.69X1 = 9.23; X2 = 7.69; X3 = 0Question 34. 34.A company must assign mechanics to each of
four jobs.Click here to view an Excel version of the table.The time involved varies according to individual abilities.
The table shows how many minutes it takes each mechanic to perform each job. If
the optimal assignments are made, how many total minutes would be required for
completing the jobs? (Points : 2)041716None of the aboveQuestion 35. 35.The customer who arrives at a bank, sees a
long line, and leaves to return another time is __________. (Points : 2)balkingcroppingrenegingblitheringnone of the above.uestion 36. 36.Two models of a product Regular (X) and
Deluxe (Y) are produced by a company. A linear programming model is used to
determine the production schedule. The formulation is as follows:Maximize profit = 50X + 60YSubject to:8X + 10Y ? 800 (labor hours)X + Y ? 120 (total units demanded)4X = 5Y ? 500 (raw materials)all variables ? 0The optimal solution is X = 100, Y = 0.How many units of the regular model would be produced based
on this solution? (Points : 2)010050120None of the aboveQuestion 37. 37.In PERT, we assume that: (Points : 2)the times to complete individual activities are known with
certainty.all activities are carried out by staff from our own
organization.the total cost of a project is independent of the time to
complete the project.the total time to complete all activities on the critical
path is described by a normal distribution.none of the above.Question 38. 38.The difference between the left-hand side
and right-hand side of a greater-than-or-equal-to constraint is referred to as
__________. (Points : 2)surplusconstraintslackshadow pricenone of the aboveQuestion 39. 39.A suburban specialty restaurant has
developed a single drive-thru window. Customers order, pay, and pick up their
food at the same window. Arrivals follow a Poisson distribution while service
times follow an exponential distribution. If the average number of arrivals is
6 per hour and the service rate is 2 every 15 minutes, what proportion of the
time is the server busy? (Points : 2)0.250.500.752.253.00Question 40. 40.Which of the following is not an assumption
of LP? (Points : 2)SimultaneityCertaintyProportionalityDivisibilityAdditivityQuestion 41. 41.Practically speaking, multiple optimal
solutions __________. (Points : 2)are infeasibleare unboundedare degenerateare unbalancedprovide management with greater flexibility in selecting and
using resourcesQuestion 42. 42.Cars arrive at a local JLUBE franchise at
the rate of 1 every 12 minutes. Service times are exponentially distributed
with an average of 15 minutes. Jack Burns, the JLUBE owner, has decided to open
a second work bay, i.e., make the shop into a two-channel system. Under this
new scheme, the total time an average customer spends in the system will be
(Points : 2)37 minutes.2.1 minutes.9.6 minutes.33.3 minutes.24.6 minutes.Question 43. 43.An automatic car wash is an example of a
constant service time model. (Points : 2)TrueFalseQuestion 44. 44.Customers enter the waiting line to pay for
food as they leave a cafeteria on a first-come, first-served basis. The arrival
rate follows a Poisson distribution, while service times follow an exponential
distribution. If the average number of arrivals is four per minute and the
average service rate of a single server is seven per minute, on average, how
much time will elapse from the time a customer enters the line until he/she
leaves the cafeteria? (Points : 2)0.67 minute0.50 minute0.75 minute0.33 minute1.33 minutesQuestion 45. 45.A certain firm has four different operations
that must be assigned to four locations. The profit (in thousands of dollars)
associated with each operation at each location is presented below. The firms
vice president would like to assign the various operations so that the total
profit is maximized. Find the appropriate assignments.Click here to view an Excel version of the table.Using the data in the table, what is the optimal location
for Operation X? (Points : 2)1234Question 46. 46.Which of the following is not a property of
all linear programming problems? (Points : 2)The presence of restrictionsOptimization of some objectiveA computer programAlternate courses of action to choose fromUsage of only linear equations and inequalitiesQuestion 47. 47.Typical resources of an organization include
__________. (Points : 2)machinery usagelabor volumewarehouse space utilizationraw material usageall of the aboveQuestion 48. 48.Assume that we are using a waiting line
model to analyze the number of service technicians required to maintain
machines in a factory. Our goal should be to: (Points : 2)maximize productivity of the technicians.minimize the number of machines needing repair.minimize the downtime for individual machines.minimize the percent of idle time of the technicians.minimize the total cost (cost of maintenance plus cost of
downtime).Question 49. 49.The shortest-route technique might be
logically used for: (Points : 2)finding the longest time to travel between two points.finding the shortest travel distance between two points.finding the most scenic route to allow travel to several
places during a trip on spring break.connecting all the points of a network together while
minimizing the distance between them.none of the above.Question 50. 50.The c-chart is useful when we: (Points : 2)take a number of measurements and compute the average.take a number of measurements and compute the ranges.find the fraction of the production lot defective.find the number of defective items in a production lot.None of the above is correct