Deck 14: Materials and Resource Requirements Planning

Question 1

A simple sequential project (each task must be completed before the next one can begin)has the time estimates (in days)shown below: What is the expected total time for the project?

A)7.33 days
B)9.00 days
C)10 days
D)12.67 days

Answer 1

9.00 days

Question 2

A simple sequential project (each task must be completed before the next one can begin)has the time estimates (in days)shown below: What is the probability that the project will be completed within 8.5 days? (Choose the closest answer.)

A)80 percent
B)15 percent
C)75 percent
D)5 percent

Answer 2

15 percent

Question 3

Annie is planning a large surprise party for her sister Gwendolyn.She has developed the following plan,including estimates of the time (in hours)and cost necessary to perform each of the tasks required. Annie will save $40 for every hour she can reduce from her plan.If Annie crashes only task A to its minimum duration,how much will she save on the project?

A)$55
B)$185
C)$160
D)$50

Answer 3

$50

Question 4

A simple sequential project (each task must be completed before the next one can begin)has the time estimates (in days)shown below: What is the likelihood the project will be completed in 10 days?

A)Between 88 and 88 percent
B)Between 89 and 92 percent
C)Between 93 and 97 percent
D)Between 98 and 100 percent

Question 5

Task X has a best-case duration of 4 days,a worst-case duration of 10 days,and a most likely duration of 6 days.Using this information,we can estimate a 50 percent probability that the task will be completed in no more than how many days?

A)6.0 days
B)3.3 days
C)10.0 days
D)6.3 days

Question 6

Given the tasks,estimated durations,and crash costs shown below,what is the total cost of the steps needed to provide the cheapest way to reduce the project length by three days?

A)$2,800
B)$2,500
C)$1,100
D)$2,300

Question 7

Annie is planning a large surprise party for her sister Gwendolyn.She has developed the following plan,including estimates of the time (in hours)and cost necessary to perform each of the tasks required. If Annie has already crashed task A to its minimum duration,what is the next task she should crash?

A)A
B)C
C)E
D)F

Question 8

Annie is planning a large surprise party for her sister Gwendolyn.She has developed the following plan,including estimates of the time (in hours)and cost necessary to perform each of the tasks required. Annie will save $40 for every hour she can reduce from her plan.Annie has decided to crash her project and use the money she saves to purchase a larger gift for Gwendolyn.Which task should she crash first?

A)A
B)D
C)C
D)E
E)B

Question 9

A project manager has discovered that three tasks are on the critical path for a particular project.She has developed the time estimates (in days)shown in the table below. The customer has offered a $10,000 bonus if the project is completed within 14 days.What is the probability that the bonus will be earned?

A)Approximately 85 percent
B)Approximately 5 percent
C)Approximately 2.3 percent
D)Approximately 97.7 percent

Question 10

Which of the following statements best describes "crash cost"?

A)Estimated cost to reduce a project task duration by one time unit.
B)Estimated cost to reduce a project duration by one time unit.
C)Estimated cost to reduce the project schedule by one time unit.
D)Actual cost to reduce a project duration by one time unit.
E)Actual cost to change a project schedule.

Question 11

An estimate of the duration of a task that is based on a weighted average of a range of possible task durations is known as:

A)Most likely duration.
B)Expected duration.
C)Worst-case duration.
D)Probabilistic duration.

Question 12

Identify the critical path to completion for the project plan.

A)A,C,D,F is 45 hours.
B)A,B,C,D,E,F is not a path.
C)A,B,E,F is 46 hours.
D)A,B,D,F is 49 hours

Question 13

Given the tasks,estimated durations,and crash costs shown below,if the benefit to crash the project by each day is a maximum of $750,how many days would it be worthwhile to crash the project?

A)0
B)1
C)2
D)3
E)4

Question 14

Which of the following statements is true regarding crash costs?

A)Crash costs tend to increase with each additional day of crashing.
B)Crash costs tend to decrease with each additional day of crashing.
C)It is usually cheaper to crash tasks that are not on the critical path.
D)Additional crash costs are rarely justified in practice.

Question 15

Annie is planning a large surprise party for her sister Gwendolyn.She has developed the following plan,including estimates of the time (in hours)and cost necessary to perform each of the tasks required. What is the planned duration of the preparation for the surprise party,assuming the critical path is completed?

A)16 hours
B)8 hours
C)20 hours
D)30 hours

Question 16

Annie is planning a large surprise party for her sister Gwendolyn.She has developed the following plan,including estimates of the time (in hours)and cost necessary to perform each of the tasks required. If Annie saves $40 for every hour she can reduce from her plan,what is her total net benefit from crashing this project by six hours?

A)$55
B)$185
C)$160
D)$240

Question 17

A project manager has discovered that three tasks are on the critical path for a particular project.She has developed the time estimates (in days)shown in the table below.Complete the table and determine the expected completion time for the project.

A)17 days
B)18 days
C)21 days
D)19 days

Question 18

In evaluating time-cost trade-offs,we start by crashing the task on the critical path that:

A)Has the lowest cost to reduce by one unit of time.
B)Has the lowest total crash cost.
C)Can be reduced the most.
D)Is the longest.
E)None of these.

Question 19

Given the project data below,what is the expected length of path A,B,C?

A)9.0
B)9.8
C)9.4
D)17

Question 20

A project manager has discovered that three tasks are on the critical path for a particular project.She has developed the time estimates (in days)shown in the table below.Complete the table and determine the probability that the project will be completed in 20 days or less.

A)Approximately 92 percent
B)Approximately 88 percent
C)Approximately 75 percent
D)Approximately 84 percent

Question 21

Given the project plan shown below,for each task assume that the best-case duration is 80 percent of the most likely duration,and the worst-case duration is 150 percent of the most likely duration.What is the expected completion time for the critical path?

A)34 days
B)21.0 days
C)35.7 days
D)22.1 days

Question 22

The four tasks below must be completed in order (a single path of tasks).Given the task information,what is the probability that the path of tasks will be completed in 20 days or less?

A)34 percent
B)56.4 percent
C)50 percent
D)76.0 percent

Question 23

Given the project plan shown below,which task has the largest standard deviation (uncertainty)relative to its expected duration (standard deviation divided by expected duration)?

A)Task A
B)Task B
C)Task D
D)Task G

Question 24

Given the tasks,estimated durations,and crash costs shown below,which task would you crash last in order to minimize the project length?

A)Task A
B)Task B
C)Task C
D)Task D
E)Task E

Question 25

Task X has a most likely duration of 10 days,a best-case duration of 8 days,and a worst-case duration of 15 days.What is the probability that it will be completed in 12 days or less?

A)0 percent
B)95.7 percent
C)90.1 percent
D)75.3 percent

Question 26

Given the tasks,estimated durations,and crash costs shown below,what would be the minimum cost to reduce the project by one day?

A)$200
B)$500
C)$700
D)$800
E)$1,000

Question 27

Task X has an 82 percent probability that it will be completed in 20 days or less.The standard deviation of its duration is five days.What is its expected duration?

A)15.4 days
B)15.9 days
C)19.1 days
D)12.3 days

Question 28

If a project path has an expected duration of 10 days and a standard deviation of three days,what is the probability that the path will be completed in 10 days or less?

A)0 percent
B)33 percent
C)50 percent
D)75 percent

Question 29

Given the tasks,estimated durations,and crash costs shown below,which task would you crash first?

A)Task A
B)Task B
C)Task C
D)Task D
E)Task E

Question 30

If a project path has an expected duration of 10 days and a standard deviation of three days,what is the probability that the path will be completed in 13 days or less?

A)50 percent
B)33 percent
C)75 percent
D)84 percent

Question 31

Given the project data below,what is the standard deviation of durations for path A,B,C?

A)1.3
B)2.3
C)1.7
D)None of the choices are correct

Question 32

Task X has a most likely duration of 10 days,a best-case duration of 8 days,and a worst-case duration of 15 days.What is the probability that it will be completed in 10 days or less?

A)0 percent
B)50.0 percent
C)33.4 percent
D)83.4 percent

Question 33

For a project with many task paths of nearly equal lengths,the best way to estimate the probabilities associated with project completion is:

A)Estimate the probability for the critical path
B)Multiply the probabilities of all paths
C)Use simulation to model the project
D)Calculate the joint probability of project completion