1.The critical path for the project shown below is ________ with duration of ________

.

Select one:

a. A-B-E; 11

b. A-B-C-D-E; 22

c. A-D-E; 13

d. A-B-D;10

e. C-E; 12

A construction project of a campus building consists of six activities (in weeks) as follows.

What is the probability that the project will be completed in 21 weeks or earlier? (keep three decimal places during computation if necessary and select the closest answer)

Note: there are another two questions based on the same project, so please keep your work to save time.

Select one:

a. None of other options.

b. about 43%

c. about 66%

d. about 75%

e. about 62%

f. about 71%

Activity Immediate Predecessors Time A 4 B D None A None A B, C, D 2 7 4 5 E a m b Activity A Immediate predecessors N/A 2 3 4 B A 1 1 C A 3 5 7 D 2 5 8 B, C E 2 3 10 F E 8 8 8