Hi Can some please help me in this question?

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

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

critical path is A-D-F-H and Project completion time is 18.667

A. What is the probability of completing this project within 19 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.)

B. our project to obtain charitable donations is now 49 days into a planned 59-day project. The project is divided into 3 activities. The first activity is designed to solicit individual donations. It is scheduled to run the first 44 days of the project and to bring in $24,500. Even though we are 49 days into the project, we still see that we have only 89% of this activity complete. The second activity relates to company donations and is scheduled to run for 49 days starting on day 5 and extending through day 54. We estimate that, even though we should have (44/49) 89.80% of this activity complete, it is actually only 54% complete. This part of the project was scheduled to bring in $149,500 in donations. The final activity is for matching funds. This activity is scheduled to run the last 10 days of the project and has not started. It is scheduled to bring in an additional $49,000. So far $175,500 has actually been brought in on the project.

Calculate the schedule variance, schedule performance index, cost variance and cost (actually value in this case) performance index.