1. Given the activity time estimates below, what is the expected time for Activity D? (round to 2 decimals as needed)

Activity	Optimistic Time	Most Likely Time	Pessimistic Time
A	1.9	5.9	7.2
B	2.1	4.1	4.1
C	1.0	2.0	6.1
D	5.9	6.8	7.9

Select one:

A. 3.43

B. 3.77

C. 5.45

D. 2.52

E. 6.83

F. 5.19

G. None of the other options.

H. 6.87

2. An activity in a network diagram has an optimistic time estimate of five days, a most likely time estimate of seven days, and a pessimistic time estimate of 15 days. Its expected time is ____ days.

3. What is the likelihood that the project described in the following table will be completed within 44 days?

Activity	Optimistic	Most Likely	Pessimistic	Mean	Variance	Predecessor
A	5	8	11			None
B	6	8	10			A
C	8	13	16			A
D	4	5	8			B, C
E	9	12	15			D
F	10	15	20			D

You need to calculate Mean and Variance.

Select one:

a. 44

b. 1.225

c. 6

d. 0.39

e. 0.11

f. 0.89