Question

Draw the corresponding PERT or Network Diagram. Estimated Times Preceding Activities 6 1 Activity ACTIIVITY 1. Interviews 2. ERDs 3. Data Dictionary 4. Tables 5. Forms 6. Queries 7. Reports 8. Testing ETTE 3 2,3 2.9 TL Activity 5,7 ETTE Copy and place the activity boxes where needed. (Extra boxes are provided above.) You may use the activity number in place of the activity itself. You should substitute in the value for the Estimated Time (ET). → Determine the "Time Early" or Early Finishes (TE) and Time Late or "Late Finishes" (TL). Substitute the values in for each TE and TL. Give the line for the Critical Path a wider width. (Right click on line and select format shape.)

Answer 1

Created a network diagram (activity on node) as per given dependencies and task's expected completion time.

During the forward pass, the Early start value of dependent activity is the highest value of its predecessor activities.

Early Finish = early start + Duration

During the backward pass, the Late finish value of predecessor activity is the lowest value of its dependent activities.

Late start = Late finish - Duration

Early Start Duration Early finish Activity Namel ID Late start Duration Late Finish | 5 5 | 18 1933 46 195 24 24933 1 044 14 6 10 103 2014 24) 7 10 3 20 4 24 3 614 13 7 20 6 13720

Since a different format is asked in the question, recreated the same network diagram as follows.

Late Finish Activity Name/ ID Expected time Early start 24 5 10 2 5 13 9 24 6 4 20 7 13

2. Delay on the critical path leads to delay in the project. Critical path have zero slack where slack = ES-LS

Slack is observed to be zero on activities 1, 2, 4, 6, 7, 8 as activity 3 has slack of 2 (6-4) days and activity 5 has slack of 6 (19-13) days.

Hence Critical path is 1-2-4-6-7-8

The same is highlighted with thicker arrow width in diagram below.

Late Finish Activity Name/ ID Expected time Early start 24 5 | 8133 9 | 24 | 5 13 | 10 | 77 17 20 7 |