Example 8 a. Draw the network and identify all the paths through it b. Determine the expected project length c. What is the probability that the project will be completed: a. At least 4 weeks earlier than expected time b. No more than 4 weeks later than expected time d. If the project due date is 19 weeks, what is the probability of not meeting the due date? e. The probability that the project will be completed on schedule if the scheduled completion time is 20 weeks f. What should be the scheduled completion time for the probability of completion to be 90%