Question 1

What is the late start time for Activity B given the activity times and precedence requirements shown in the table? 
A) 18
B) 9
C) 13
D) 5

Accepted Answer

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Question 2

Use the information in the table to determine the slack time for Activity B. 
A) 6 days
B) 4 days
C) 2 days
D) 0 days

Accepted Answer

The answer of Use the information in the table to...

Question 3

What is the late start time for Activity E given the activity times and precedence requirements shown in the table? 
A) 12
B) 13
C) 14
D) 15

Accepted Answer

Activity E has two preceding activities, C and D. The latest possible start time for Activity E will be the minimum of the latest finish times of activities C and D. Thus, the late start time for Activity E will be 13, which is the latest finish time of activity D.

Question 4

Activity Z has estimates a=5, b=10, m=7; activity X has estimates a=4, b=11, m=6; and activity Y has estimates a=3, b=12, m=8. Which of the following statements is best?
A) Activity X is longer than Activity Y.
B) Activity X has a higher standard deviation than Activity Z
C) Activity Z is shorter than Activity Y.
D) Activity Y has a smaller variance than Activity Z.

Accepted Answer

The answer of Activity Z has estimates a=5, b=10, m=7;...

Question 5

Use the information in the table to determine the late start time for Activity E. 
A) day 23
B) day 26
C) day 32
D) day 17

Accepted Answer

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Question 6

Use the information in the table to determine the early finish time for Activity D. 
A) day 23
B) day 26
C) day 29
D) day 32

Accepted Answer

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Question 7

An activity has a pessimistic time that is three times as long as its most likely time and five times as long as its optimistic time. If the activity variance is 10, what is the expected time?
A) about 10 days
B) about 14 days
C) about 19 days
D) about 23 days

Accepted Answer

The answer of An activity has a pessimistic time that...

Question 8

Use the information in the table to determine the late finish time for Activity B. 
A) day 17
B) day 26
C) day 20
D) day 23

Accepted Answer

The Late Finish Time for Activity B is the same as the Late Start Time for Activity F, which is 23 days. This is because Activity F is the immediate predecessor of Activity B and it takes 23 days to complete. Therefore, the correct answer is D) day 23.

Question 9

What is the late finish time for Activity D given the activity times and precedence requirements shown in the table? 
A) 14
B) 13
C) 12
D) 11

Accepted Answer

Based on the table, the earliest finish time for Activity D is 11 (calculated as the sum of its earliest start time and duration). However, Activity F, which is a successor of Activity D, has an earliest start time of 12. Therefore, Activity D must finish before Activity F starts, giving it a late finish time of 12.

Question 10

What is the early start time for Activity G given the activity times and precedence requirements shown in the table? 
A) 14
B) 15
C) 16
D) 17

Accepted Answer

The answer of What is the early start time for...

Question 11

What is the slack time for activity E? 
A) 1 day
B) 0 days
C) 2 days
D) 4 days

Accepted Answer

Slack time for an activity is calculated by finding the difference between the earliest start time (ES) and the latest start time (LS). For activity E, ES is 15 and LS is 15, therefore the slack time is 0 days. The best choice is B, as this is the only option representing the correct calculation of slack time for activity E.

Question 12

An activity has an optimistic time estimate of 7 days, a most likely estimate of 12 days, and a pessimistic estimate of 20 days. What is the expected standard deviation of the activity?
A) between 2 and 3 days
B) between 3 and 4 days
C) between 4 and 5 days
D) between 5 and 6 days

Accepted Answer

The answer of An activity has an optimistic time estimate...

Question 13

Use the network diagram and activity lengths in the nodes to determine the early start time for activity D. 
A) 8
B) 13
C) 14
D) 21

Accepted Answer

The answer of Use the network diagram and activity lengths...

Question 14

What is the early finish time for Activity F given the activity times and precedence requirements shown in the table? 
A) 17
B) 12
C) 13
D) 26

Accepted Answer

The answer of What is the early finish time for...

Question 15

Use the information in the table to determine the early start time for Activity B. 
A) day 10
B) day 8
C) day 9
D) day 11

Accepted Answer

The answer of Use the information in the table to...

Question 16

What is the slack time for Activity B given the activity times and precedence requirements shown in the table? 
A) 7
B) 6
C) 5
D) 4

Accepted Answer

The answer of What is the slack time for Activity...

Question 17

What is the float start time for Activity C given the activity times and precedence requirements shown in the table? 
A) 1
B) 2
C) 3
D) 4

Accepted Answer

The answer of What is the float start time for...

Question 18

What is the early start time for Activity D given the activity times and precedence requirements shown in the table? 
A) 5
B) 9
C) 13
D) 18

Accepted Answer

The answer of What is the early start time for...

Question 19

An activity has an optimistic time estimate of 7 days, a most likely estimate of 12 days, and a pessimistic estimate of 20 days. What is the expected duration of the activity?
A) 13 days
B) 13.5 days
C) 12 days
D) 12.5 days

Accepted Answer

The expected duration of the activity can be calculated using the formula: 
(expected duration) = (optimistic estimate + 4 x most likely estimate + pessimistic estimate) / 6 
= (7 + 4 x 12 + 20) / 6 
= 12.5 days
Therefore, the best choice is D.

Question 20

What is the slack time for Activity C given the activity times and precedence requirements shown in the table? 
A) 2
B) 1
C) 0
D) 3

Accepted Answer

The answer of What is the slack time for Activity...

Quiz 9: Project Scheduling: Networks, Duration Estimation, and Critical Path

What is the late start time for Activity B given the activity times and precedence requirements shown in the table?

Use the information in the table to determine the slack time for Activity B.

What is the late start time for Activity E given the activity times and precedence requirements shown in the table?

Activity Z has estimates a=5, b=10, m=7; activity X has estimates a=4, b=11, m=6; and activity Y has estimates a=3, b=12, m=8. Which of the following statements is best?

Use the information in the table to determine the late start time for Activity E.

Use the information in the table to determine the early finish time for Activity D.

An activity has a pessimistic time that is three times as long as its most likely time and five times as long as its optimistic time. If the activity variance is 10, what is the expected time?

Use the information in the table to determine the late finish time for Activity B.

What is the late finish time for Activity D given the activity times and precedence requirements shown in the table?

What is the early start time for Activity G given the activity times and precedence requirements shown in the table?

What is the slack time for activity E?

An activity has an optimistic time estimate of 7 days, a most likely estimate of 12 days, and a pessimistic estimate of 20 days. What is the expected standard deviation of the activity?

Use the network diagram and activity lengths in the nodes to determine the early start time for activity D.

What is the early finish time for Activity F given the activity times and precedence requirements shown in the table?

Use the information in the table to determine the early start time for Activity B.

What is the slack time for Activity B given the activity times and precedence requirements shown in the table?

What is the float start time for Activity C given the activity times and precedence requirements shown in the table?

What is the early start time for Activity D given the activity times and precedence requirements shown in the table?

An activity has an optimistic time estimate of 7 days, a most likely estimate of 12 days, and a pessimistic estimate of 20 days. What is the expected duration of the activity?

What is the slack time for Activity C given the activity times and precedence requirements shown in the table?