Activity	Optimistic Time (weeks)	Most Likely Time (weeks)	Pessimistic Time (weeks)	Immediate Predecessors
A	2	2	6	--
B	2	5	6	--
C	2	4	6	A
D	1	3	5	A,B
E	1	2	9	C
F	2	3	6	C
G	3	4	10	D,F
H	1	3	8	E,G

A ) What is the probability that the following project will be completed in 24 weeks or less?

Note

1. In calculating the expected time (te) round to the nearest whole number, and use these rounded numbers for (te) in all subsequent calculations.

2. In calculating the variance, standard deviation, z-value, and probability, round to the nearest second decimal point.

B ) Draw a network diagram on paper. Use the expected time (te) for each task time. Also, in the diagram, indicate earliest start (ES), earliest finish (EF), latest start (LS) and latest finish (LF).