A small software development project at Krishna Dhir's firm has five major activities. The times are estimated and provided in the table below.

ACTIVITY	IMMEDIATE PREDECESSOR	a	m	b
A		1	4	13
B		3	6	9
C	A	5	8	17
D	B	2	5	8
E	C	2	2	2

a) Find the expected completion time for this project.

The expected completion time for this project is _________ (enter response as a whole number).

b) What variance value would be used to find probabilities of finishing by a certain time?

The project variance value of completion time is ________ (enter response as a whole number).