When activitys duration are stochastic, the expected duration of a path is equal to the sum...
When activitys duration are stochastic, the expected duration of a path is equal to the sum of the expected times of the activities on that path.
When activity durations are stochastic, the variance of a path is equal to the sum of the variations of the activities on that path.
Are these statements true or false? Why?
Homework Answers
Both the statements are true.
In case of stochastic, the expected activity duration = (Optimistic time + 4*Most likely time + Pessimistic time)/6
Variance = (Pessimistic time - Optimistic time)^2/36
The expected time for the path is the sum of expected time of all the activities. Also, Variance of path is sum of variances of activities in the path
Add Answer to:
When activitys duration are stochastic, the expected duration of
a path is equal to the sum...
1. When finding the approximate probability of project duration, it is necessary to know which of...
1. When finding the approximate probability of project duration, it is necessary to know which of following? a. The mean and variance of each activity b. The mean of each activity on the CP c. The sd of only the activities on the CP d. Each activity's probability of completion e. The distribution of activity times 2. The sd of a path is computed as: a. the sum of the sd of all activities on the path b. the square...
1. Waiting lines occur even in systems that are less that 100% utilized because of variability...
1. Waiting lines occur even in systems that are less that 100% utilized because of variability in service rates and/or arrival rates - TRUE OR FALSE 2. In a single-server system, the utilization factor is equal to the mean arrival rate divided by the mean service rate - TRUE OR FALSE 3. All preceding activities have to be completed before work can start on a follower activity - TRUE OR FALSE 4. To reduce project duration, activities on the critical...
Which one is not correct about the critical path method (CPM) in project management? Duration of...
Which one is not correct about the critical path method (CPM) in project management? Duration of a project is equal to the duration of its critical path. There could be more than one critical paths. Crashing a project is shortening the duration of the critical activities. The tasks on the critical path can be delayed without delaying the project duration. Slack times of activities on a critical path are zero.
A simple CPM network has three activities, A, B, and C. A is an immediate predecessor...
A simple CPM network has three activities, A, B, and C. A is an immediate predecessor of B and of C. B is an immediate predecessor of C. The activity durations are A=4, B=3, C=5. The network has no critical path. The critical path cannot be determined without knowing PERT expected activity times. The critical path is A-C, duration 10.5. The critical path is A-B-C, duration 9. The critical path is A-B-C, duration 12.
For each of the following network diagrams, determine both the critical path and the expected project...
For each of the following network diagrams, determine both the critical path and the expected project duration. The numbers on the arrows represent expected activity times a. Activity-on-arrow diagram 4 2 10 5 12 3 4 The critical path is (Click to select) The expected project duration is
Use a PERT network to establish the expected duration for the project described in the table...
Use a PERT network to establish the expected duration for the project described in the table below: (SHOW the PERT NETWORK) Activity Predecessors Duration a m b Exp. Duration Var. Crash Week 1 Crash Week 2 A - 3 6 9 700 100 B A 6 7 14 600 200 C A 4 6 14 400 600 D B, C 4 6 8 200 600 E B, C 6 9 12 400 300 F C 4 6 14...
11. In CPM/PERT, an activity that is on the critical path A. has equal values for...
11. In CPM/PERT, an activity that is on the critical path A. has equal values for "Latest Start" and "Earliest Start" ( LS = ES ) B. has equal values for "Latest Finish" and "Earliest Finish" ( LF = EF ) C. is used in calculating total project duration D. has slack equal to zero E. all of the above 12. In CPM/PERT, the critical path through the network A. will require the most time of any path B. will...
Show step by step solutions. (a) Complete the expected duration, standard deviation and variance for activities...
Show step by step solutions.
(a) Complete the expected duration, standard deviation and
variance for activities A and B and enter them into the table
(provided above).
(b) Draw the Activity-on-node (AON) including the Start &
Finish diagram and use the expected activity durations to complete
a forward and backward pass (show calculations for ES,EF,LS,LF),
create a table and show your work.
Maritime Shipbuilding is set to start building the first of six ships and to finish this ship within...
The due date for a project is 20 weeks. If the expected activity times on a...
The due date for a project is 20 weeks. If the expected activity times on a noncritical path is 19 weeks, what is the probability that this path will take more than 20 weeks? The variance of the activities on this path is 4.16. The probability is ......... percent. (Enter the closest whole number)
1. State whether each of the following statement is true or false. a) The sequence of...
1. State whether each of the following statement is true or false. a) The sequence of activities in a project is depicted by the precedence (0.5 mark) (0.5 mark) relationships. The critical path is the shortest path through the project network. Slack is the amount of time an activity can be delayed without delaying the project. In PERT, three time estimates (optimistic, most likely and pessimistic) provide an estimate of the mean and variance for each activity based on the...
For each of the following network diagrams, determine both the critical path and the expected project duration. The numbers on the arrows represent expected activity times a. Activity-on-arrow diagram 4 2 10 5 12 3 4 The critical path is (Click to select) The expected project duration is
Show step by step solutions.
(a) Complete the expected duration, standard deviation and
variance for activities A and B and enter them into the table
(provided above).
(b) Draw the Activity-on-node (AON) including the Start &
Finish diagram and use the expected activity durations to complete
a forward and backward pass (show calculations for ES,EF,LS,LF),
create a table and show your work.
Maritime Shipbuilding is set to start building the first of six ships and to finish this ship within...
1. State whether each of the following statement is true or false. a) The sequence of activities in a project is depicted by the precedence (0.5 mark) (0.5 mark) relationships. The critical path is the shortest path through the project network. Slack is the amount of time an activity can be delayed without delaying the project. In PERT, three time estimates (optimistic, most likely and pessimistic) provide an estimate of the mean and variance for each activity based on the...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago