1. Critical activities are those that can be delayed without delaying the entire

Question

1. Critical activities are those that can be delayed without delaying the entire project

True

False

2. PERT and CPM are applicable only when there is no dependence among activities

True

False

3. a path through a project network must reach every node

True

False

4. a critical activity can be part of a noncritical path

True

False

5. the earliest finish time for the final activity is the project duration

True

False

6. Two airlines offer conveniently scheduled flights to the airport nearest your corporate headquarters. Historically, flights have been scheduled as reflected in this transition matrix.

Current

Flight

Next Flight

Airline A

Airline B

Airline A

.6

.4

Airline B

.2

.8

If your last flight was on B, what is the probability your second next flight (that is, the flight after the next flight) will be on A?

Hints: (1) what are the possible

Current

Flight

Next Flight

Airline A

Airline B

Airline A

.6

.4

Airline B

.2

.8

Explanation / Answer

1. False

An activity is said to be critical if its duration cannot be extended without delaying the completion of the project.

2. False

To apply the method, certain information is needed in advance: it must be possible to analyse the project into activities, the dependency relationships between the activities must be known, and the time taken for each activity must be known or at least estimable.

3. False

The structure of project network does not need its path to reach every node

4. True

A critical path is the sequence of scheduled activities that determines the duration of a project plan or an iteration plan. The critical path is the longest path through a project or an iteration, and determines the shortest time possible to complete the activities in the plan.

It does not determine whether the activity is critical

5. False

The earliest time is the critical path.

6.)

Possibilities are

B - A - A: Probability = .2 times .4 = .08

B - B - A : Probability = .8 times .2 = .16


Total = .08 + .16 = .24=24%

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