The following table provides a description for the project Z.

Activity	Duration	Predecessor	Cost to crash by 1 day	Max days to crash
A	5	-	$300	1
B	3	-	$100	1
C	4	A	$100	1
D	3	A	$200	2
E	4	B	$400	3
F	2	D, E	$500	2
G	4	E	$300	3
H	3	C	$100	2

1. If your task is to crash this project by 2 days, what is the most efficient cost of doing it?(Just input the number with no decimals or dollar signs)
2. Suppose that the project duration that you have calculated in question 2 (before crashing) is the expected duration of the project. Its variance of the critical path is 4 days. The principal requires you to complete the project before the day 15. If you finish later, you will incur a fine. What is the probability of receiving a fine?
3. Your manager wonders whether or not you should crash the project by 2 days. If you do, the variance of the project duration will remain the same. What is the probability that you will receive a fine? Based on your calculations in Q4 and Q5, would you recommend crashing the project?