17. In AOA networks, an activity of zero duration is called a(n) ________.

a) dummy activity

b) critical

c) important

d) critical activity

18. The __________ chart shows planned and actual progress for a number of tasks displayed against a horizontal timescale.

a) PERT

b) timeline

c) critical

d) Gantt

19. Project task E has the following estimates: (1) optimistic time 10 days, (2) Pessimistic time - 20 days, and (3) Most likely time - 12 Days. The expected time using the beta statistical distribution is __________ days.

a) 13

b) 14

c) 9

d) 22

20. Project task E has the following estimates: (1) optimistic time 10 days, (2) Pessimistic time - 20 days, and (3) Most likely time 12 Days. The standard deviation for time using the beta statistical distribution is ________ days.

a) 2

b) 1.5

c) 2.33

d) 1.67

21. Task H has duration of 5 days, an early start of 25 days, an early finish of 30 days, a late start of 25 days, and a late finish of 30 days. There are __________ days of slack for task H.

a) 0

b) 5

c) 10

d) 20

22. Assume that task J has a most likely duration of 20 days, an optimistic duration of 13 days, and a pessimistic duration of 30 days. If the optimistic and pessimistic durations are 95 percent estimates, the standard deviation for task J is ________ days.

a) 5.167

b) 5

c) 4.67

d) 3.2

23. A __________ is a combination of interrelated activities and events depicted with arcs and nodes.

a) linked plan

b) chain of events

c) critical chain

d) network

24. In AON diagrams, a(n) __________ is a point where one or more lines (arrows) begin or terminate, commonly used for depicting an event or activity.

a) activity

b) path

c) node

d) arc