Here is the information about the project:

Activity	Immediate Predecessors	Optimistic Time	Most Likely Time	Pessimistic Time
A	N/A	2	3	4
B	A	1	2	5
C	B	1	2	3
D	A	1	2	3
E	B	4	5	6
F	B, C, D	2	4	6
G	F	2	2	6

Answer Q8 to Q10 according to this information. Use 2 decimal points in the calculation. Q8. The mean activity time for activity F is 0.67

True

False

Make sure the Earliest Starting Time of activity F is 7.33. The mean of the Total Project Completion Time is 14 and the standard deviation is around 1.25.

True

False

Which of the following statement is not true?

	A.	If we want to be sure (90% sure) that the project will be completed by the day we promised. We should promise 14 days.
	B.	The probability that the project will be longer than 12 days is more than 90%.
	C.	The 85% confidence interval is between 12.20 and 15.80.
	D.	The probability the project will be shorter than 8 days is almost impossible.