Table 1 presents the activities that make up a project. You will use the information and data provided to fill in the blank columns and answer the questions.

Table 1
Activity	Precedence	Time (Weeks)			Te	2
		Optimistic (a)	Adequate (m)	Pessimist (b)
A	--	5	6	13
B	--	2	7	12
C	B	1	2	3
D	A	1	3	5
E	D	4	5	6
F	D	1	1	1
G	C	2	3	10
H	E, F, G	4	5	6
I	H	3	5	7

a. For each activity, complete the Te and 2 columns.

b. Present the precedence diagram.

c. Present the routes and expected time for each one.

d. Present the critical path, expected time and standard deviation.

e. Which activity on the critical path has the best estimated time and why?