QUESTION 11 The critical path for the network activities shown below would be B-E if B has duration more than at least: Activity Duration Immediate Predecessors 10 7 B C D 7 5 A B.CD a. 23 b.19 c. 17 d. 12 e. 14 QUESTION 12 The upsurge in school supply sales in fall of each year is an example of the a. trend component. b.cyclical component. c. seasonal component. d. irregular component. QUESTION 14 A network has been crashed to the point where all activities are critical. Additional crashing a. may require crashing multiple tasks simultaneously along a critical path. b.can be done, but all critical paths must be reduced in duration c. is unnecessary. d. is prohibitively expenbsive, e. is impossible. QUESTION 15 with duration The critical path for the network activities shown below is Activity Duration Immediate Predecessor 2 B 4 6 A D 3 2 B,C,D , a. B-D-E; 11 b.B-C-E; 12 C. A-C-E, 10 d.A-D-E; 5 e.B-E 6 QUESTION 16 Analysis of a PERT problem shows the estimated time for the critical path to be 108 days with a variance of 64. There is a .81 probability that the project will be completed before approximately day a. 118 5.111 c 115 d. 108 e. 98 QUESTION 17 An activity on a PERT network has these time estimates: optimistic = 1, most likely - 2. and pessimistic - 7. Its expected time is a. 8 6.2.33 c.2.5 Cd. None of the other answers is correct. e. 2.67 QUESTION 18 Which of the following statements is True? I. PERT, but not CPM, has the ability to consider the precedence relationships in a project. II. The shortest of all paths through the network is the critical path. a. Only II b. Both of the above. c. Only d. Neither of the above QUESTION 19 A contractor's project being analyzed by PERT has an estimated time for the critical path of 120 days. The sum of all activity variances is 81; the sum of variances along the critical path is 64. The probability that the project can be completed between days 110 and 134 is 2.0.1335 5.1.29 c.0.1056 d.0.8543 e. 0.3943