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

	IMMEDIATE PREDECESSORS	TIMES (DAYS)
ACTIVITY		a	m	b
A		1	5	9
B		1	2	3
C	A	3	5	7
D	A	1	4	10
E	B	1	2	3
F	C,D	1	2	12
G	D,E	1	6	8
H	F,G	2	3	8

b. What is the critical path?

• A-C-F-H

• A-D-G-H

• A-D-F-H

• B-E-G-H

c. What is the expected project completion time? (3 decimal places)

d. What is the probability of completing this project within 20 days? (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 final answer to 4 decimal places.)