Module 2
3 Pages

Module 2

Course Number: MGT 455, Spring 2012

College/University: Grand Canyon

Word Count: 494

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3.7 Task time estimates for a production line setup project at Robert Klassens Ontario factory are as follows: Activity A B C D E F G Immediate Predecessors A B, C B, C D E, F Time (in hours) 6 7.2 5 6 4.5 7.7 4 a) Draw the project network using AON. E7= 17 L7= 17 E6= 6 L6= 6 E1= 0 L1= 0 5 6 C A 7.7 F E7= 24.7 L7= 24.7 G 6 5 7.2 E3= 0 L3= 3.8 E,4 D E5= 11 L5= 11 B 7.2 b) Identify the critical...

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Task 3.7 time estimates for a production line setup project at Robert Klassens Ontario factory are as follows: Activity A B C D E F G Immediate Predecessors A B, C B, C D E, F Time (in hours) 6 7.2 5 6 4.5 7.7 4 a) Draw the project network using AON. E7= 17 L7= 17 E6= 6 L6= 6 E1= 0 L1= 0 5 6 C A 7.7 F E7= 24.7 L7= 24.7 G 6 5 7.2 E3= 0 L3= 3.8 E,4 D E5= 11 L5= 11 B 7.2 b) Identify the critical path. Critical Path = A C D F G c) What is the expected project length? Expected Project length = 28.7 hours E2= 11 L2= 20.2 4.5 Stop 4 E5= 28.7 L5= 28.7 3.15 The following is a table of activities associated with a project at Bill Figg Enterprises, their durations and what activities each must precede: Activity A (start) B C E F (end) Duration (weeks) 1 1 4 2 2 Precedes B, C E F F a) Draw an AON diagram of the project, including activity durations B A E 1 week (1 1 week 2 week C ) F 4 week 2 week b) Define the critical path, listing all critical activities in chronological order. Duration A---B---E---F = 1+1+2+2 6 weeks A---C---F = 1+4+ 2 7 weeks Critical path c) What is the project duration (in weeks)? 7 weeks d) What is the slack (in weeks) associated with any and all noncritical paths through the project? All critical activities will have zero EST EFT A 0 B A 1 C A 1 E B 2 F C,E 5 LST 1 2 5 4 7 LFT 0 2 1 3 5 1 3 5 5 7 Slack slack. Activity Predecessor (weeks) 0 1 0 1 0 3.17 Bill Fennema, 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. Activity A B C D E F G H I J K Predecessor Potimistic A A A B E, C E,C F F D,G,H I,J Likely Pessimistic 4 2 8 4 1 6 2 2 6 4 2 8 8 12 6 2 8 3 2 6 6 2 Expected 10 24 16 10 3 20 4 2 6 12 3 7.7 9.7 12.0 6.3 2.0 9.7 3.0 2.0 6.0 6.7 2.2 a) Based on the calculation of estimated times, what is the critical path? 40.2 Longest path is the critical path A---C--F--H--J---K B E F I H A D J b) What is the estimated time of the critical path? Network paths A---C--F--H--J---K A---B---E---F---I---K A---B---E---F---H---J---K A---B---E--G---J---K A---D---J---K K G C Duration (weeks) 40.2 37.2 39.8 31.2 22.8 Longest path is the critical path c) What is the activity variance along the critical path? CriticalpathisACFHJK Varianceoncriticalpath=1+1.78+5.44+0+1.78+0.03=10.03 d)Whatistheprobabilityofcompletionoftheprojectbeforeweek36? Z=(Xmean)/std.dev =(3640.17)/3.17 =1.32 Whichisabout9.6%chanceofcompletingprojectbeforeweek36.

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