TIMES (days)
Activity	Start Node	Finish Node	OPTIMISTIC to	MOST LIKELY tm	PESSIMISTIC tp
A	1	2	21	33	57
B	1	3	24	30	48
C	2	5	14	26	62
D	3	4	32	38	56
E	4	5	15	36	57

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


Activity A………t_e = 30
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 = 4


Path 1 – 2 – 5
Mean Time =

Standard Deviation =5


Path 1 – 3 – 4 – 5
Mean Time =

Standard Deviation =