6. (Bill Fennema, a president of Fennema Construction, has developed the tasks, durations, and predecessor relationships in the following table for building new motels. Draw the AON network and answer the questions that follow. a. What is the expected (estimated) time and variance for each activity? b. Draw and analyze the AON network for the project c. Identify the critical path(s). d. What are the expected (mean) and variance of the time to complete the project? e. What is the probability of completion of the project before week 36