Please help me solve this assignment! Thanks!

The following represents a project that should be scheduled using CPM:

ACTIVITY	IMMEDIATE PREDECESSORS	TIMES (DAYS)
		a	m	b
A		1	4	7
B		1	3	5
C	A	2	5	11
D	A	1	8	9
E	B	1	2	3
F	C,D	1	6	11
G	D,E	1	2	3
H	F,G	2	3	3

b. What is the critical path?

1. A-C-F-H
2. A-D-F-H
3. A-D-G-H
4. B-E-G-H

c. What is the expected project completion time?

Note: Do not round intermediate calculations. Round your answer to 3 decimal places.

d. What is the probability of completing this project within 22 days?

Note: Use Excel's NORM.S.DIST function to find the correct probability for your computed Z value. Do not round intermediate calculations. Round Z value to 2 decimal places and the final answer to 4 decimal places.