Apply the right method for solving problems in a project / business feasibility in an industrial company in a comprehensive manner

No.	Activity	Predecessors	Estimated Time (Month)
Time Optimistic (a)	Time Normal (m)	Time Pessimistic (b)
1	A		11	15	16
2	B	A	13	16	18
3	C	B	14	17	22
4	D	B	16	17	19
5	E	B	15	18	21
6	F	C	12	19	20
7	G	C	11	13	15
8	H	D,E	18	20	23
9	I	F,G,H	22	23	26

Questions:

a. Create a Network Planning

b. Determine the activity path

c. Calculate Expected Time (te)

d. Determine the critical path

e. Calculate Variance (vt)

f. Calculate Standard Deviation (St)