The following table of probabilistic time estimates (in weeks)and activity predecessors are provided for a project.

Table 9.2
-Using Table 9.2,how much slack is associated with activity C?
A)0 weeks.
B)4.50 weeks.
C)12.67 weeks.
D)31.00 weeks.

Question

The following table of probabilistic time estimates (in weeks)and activity predecessors are provided for a project.
 
Table 9.2
-Using Table 9.2,how much slack is associated with activity C?
A)0 weeks. 
B)4.50 weeks. 
C)12.67 weeks. 
D)31.00 weeks.

Quizplus · Accepted Answer

To calculate the slack associated with activity C, we need to first find its earliest finish time and latest finish time. The earliest finish time for activity C is 10 weeks, which is the sum of the earliest start time for activity B (6 weeks) and the duration of activity C (4 weeks). The latest finish time for activity C is 14.5 weeks, which is the sum of the latest start time for activity B (10 weeks) and the duration of activity C (4 weeks). Therefore, the slack associated with activity C is the difference between the latest and earliest finish times, which is 14.5 - 10 = 4.5 weeks. Thus, the correct answer is B.

The Following Table of Probabilistic Time Estimates (In Weeks)and Activity