Question: 13. The critical path for the network activities shown below is ________ with duration ________. Activity Duration Immediate Predecessors A 4 B 1 A C

13.

The critical path for the network activities shown below is ________ with duration ________.

Activity

Duration

Immediate Predecessors

A

4

B

1

A

C

7

D

1

A

E

3

B, C, D
  • A.

    A-B-C-D-E; 16

  • B.

    B-C-D; 9

  • C.

    A-B-E; 8

  • D.

    C-E; 10

  • E.

    A-D-E; 8

14.

A contractor's project being analyzed by PERT has an estimated time for the critical path of 133 days. The sum of all activity variances is 57; the sum of variances along the critical path is 47. The probability that the project will take 151 or more days to complete is

  • A. 0.004
  • B. 0.996
  • C. 0.649
  • D. 0.009
  • E. 0.351

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