Based on the following table, and using the PERT technique answer the next questions.

Activity	a	m	b
A	4	6	10
B	2	4	6
C	6	6	7
D	10	12	12
E	4	7	8
F	5	8	10
G	3	5	7
H	7	9	12
I	8	10	14

The value of for activity D is ___.

11

12

15

18

The value of ^2 for activity I is ___.

.30

.45

.55

1.00

The Critical Path of the project using is ___.

A, C, F, H

A, B, F, H

A, B, C, F, H

A, B, C, F, H, I

The probability of finish the project in 30 days or less is ___.

57%

62%

70%

74%

PERT assumes that the duration of each activity is a random variable with unknown mean and standard variation.

True

False