Use this information to answer the following questions.
Consider the following Activity-On-Node (AON)PERT project.The three values that represent each activity's completion time (in days)correspond to an optimistic time,most likely time,and pessimistic time,respectively.

-Refer to the figure.What is the probability of not completing the project within 18 days?
A)0.0668
B)0.4332
C)0.9332
D)0.4878
E)0.0122

Question

Use this information to answer the following questions.
Consider the following Activity-On-Node (AON)PERT project.The three values that represent each activity's completion time (in days)correspond to an optimistic time,most likely time,and pessimistic time,respectively.
 
-Refer to the figure.What is the probability of not completing the project within 18 days?
A)0.0668 
B)0.4332 
C)0.9332 
D)0.4878 
E)0.0122

Quizplus · Accepted Answer

The probability of not completing the project within 18 days is the complement of completing it within that timeframe. If the probability of completing the project within 18 days is given or calculated as a certain value, then the probability of not completing it within 18 days is 1 minus that value. Without the specific figure or additional context, the general approach to find the probability of not completing the project within a certain time is to subtract the probability of completing it on time from 1. Given the options, if the correct probability of completing the project within 18 days is implied to be 0.0668 (from the options provided, assuming one of them represents the complement), then the probability of not completing it within that time would be 1 - 0.0668 = 0.9332, which corresponds to option C.

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