3. Given the following network diagram for a project (activity times are in days): 15 2 9 17 8 00 6 3 6 12 un 5 12 9 a) Determine Earliest Start time (ES), Earliest Finish time (EF), Latest Start time (LS), Latest Finish time (LF), and Slack Time for each activity. ES EF LS LF Slack Activity 1-2 1-3 1-4 2-5 2-6 3-7 4-7 5-8 JION TITTE TOT CUCUCIVILY LF Slack LS EF Activity ES 1-2 1-3 1-4 2-5 2-6 3-7 4-7 5-8 6-8 7-8 b) Identify the Critical Path(s). c) What is the expected project duration? d) If the project duration must be reduced by 3 days, which activities will most likely be affected? Based on your worksheet calculations, answer the questions below. Question 3a Enter the ES, EF, LS, LF, and Slack for each activity. (Every box must be filled in so use O's if needed.) ES EF LS LF Slack Activity 1-2 1-3 1-4 2-5 2-6 3-7 4-7 5-8 6-8 7-8 00 00 00 Question 3b and 3C The critical path is The expected duration is days. Question 3d (Uncheck every box to remove the question mark and then check all that apply.) If the project must be reduced by 3 days, the activites most likely affected are 21-2 1-3 2 14