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ARE155FA11HW7

# ARE155FA11HW7 - 1 Managerial Economics(ARE 155 University...

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1 Managerial Economics (ARE) 155 University of California, Davis Fall Quarter, 2011 Instructor: John H. Constantine Homework 7: Due Friday DECEMBER 2 , 2011 PROBLEMS 1 – 4 ARE MIDTERM 2-TYPE QUESTIONS. PROBLEMS 5 – 8 ARE NOT MIDTERM 2 MATERIAL, BUT THEY ARE FINAL EXAM MATERIAL Problem 1 : You are given the following project schedule. The table includes all activities required to complete the project, each activity’s immediate predecessor and each activity’s time of completion (in days.) (a) Develop a project network for this problem. (b) Find the critical path and calculate the total project completion time. (You must find EST, EFT, LST, and LFT to answer this problem. ACTIVITY IMMEDIATE PREDECESSOR TIME (DAYS) A --- 5 B A 6 C A 2 D A 9 E B 9 F C, D 3 G D 7 H D 4 I E,F,G 6 J H 5

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2 Problem 2 : You are given the following project network. In each hexagon, the top number is activity number and the bottom number is the activity time, in weeks. Determine (i) the critical path and (ii) the number of weeks the project is expected to take. Start Finish 1 8 2 12 3 3 4 9 5 3 6 2 7 12 8 7 9 30 10 21 11 20 12 5 13 16 14 17 15 5 16 6 17 3 Problem 3 : Building a backyard playground for an elementary school consists of nine major activities. The activities and their immediate predecessors are shown here: Activity A B C D E F G H I Immediate Predecessor A, B A, B B C D D, F E, G, H The activity time (in days) for constructing the playground project are given in the table: Activity Optimistic Most Probable Pessimistic A 3 5 6 B 2 4 6 C 5 6 7 D 7 9 10 E 2 4 6 F 1 2 3 G 5 8 10 H 6 8 10 I 3 4 5 (a) Construct the project network. (b) What are the critical activities? (c) What is the expected time to complete the project?
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ARE155FA11HW7 - 1 Managerial Economics(ARE 155 University...

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