Given the Activity on Arrow Diagram and the data found in the table above, calculate each of the following values:

 

Given the Activity on Arrow Diagram and the data found in the table above, calculate each of the following values:


Activity A………t_e = 31
Standard Deviation = 3
Activity B………t_e =

Standard Deviation =

Activity C………t_e =

Standard Deviation =

Activity D………t_e =

Standard Deviation =

Activity E………t_e =

Standard Deviation = 9


Path 1 – 2 – 5
Mean Time =

Standard Deviation =5


Path 1 – 3 – 4 – 5
Mean Time =

Standard Deviation =

2 3 TIMES (daya) Activity Start Finish OPTIMISTIC MOST LIKELY PESSIMISTIC Node Node to tm A 24 30 42 B 3. 20 23 32 2 5 15 27 39 3 4 25 43 61 E 4 15 42 69