Solve the following question using PNET. Enter your answers correct to 3 decimal places. What is the mean and variance of the duration for each activity? Activity Predecessors Optimistic Time Most Likely Time Pessimistic Time Mean Variance A None 50 65 74 None 58 61 76 A 36 57 84 A 24 57 84 55 79 85 61 79 85 Enter the following details Correlation with longest Probability of path finishing earlier than 206 Activities in path (eg ABC) Variance of Mean duration duration path days Longest path Second longest path Third longest path Shortest path What is the probability that the project will finish earlier than 206 days? Enter your answers correct to 3 decimal places.

Solve the following question using PNET. Enter your answers correct to 3 decimal places. What is the mean and variance of the duration for each activity? Activity Predecessors Optimistic Time Most Likely Time Pessimistic Time Mean Variance A None 50 65 74 None 58 61 76 A 36 57 84 A 24 57 84 55 79 85 61 79 85 Enter the following details Correlation with longest Probability of path finishing earlier than 206 Activities in path (eg ABC) Variance of Mean duration duration path days Longest path Second longest path Third longest path Shortest path What is the probability that the project will finish earlier than 206 days? Enter your answers correct to 3 decimal places.

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Which activities are noncritical or can be delayed? (You must also complete the table below) Note: to means optimistic time , tm means most likely time , tp pessimistic time, and te means expected activity time estimate.
The activities necessary for the completion of a project are listed in the table below (Time in weeks). You are asked to complete the project 1 week ahead of time. You should crash Activity ________. This will incur an additional cost of $_________ .
In making a forward pass through a network, three activities are immediate predecessors for activity T and one following activity. What is the late start time for activity T? Group of answer choices: - the LS of the following activity plus the activity time of T - the smallest EF for the three activities that are immediate predecessors for activity T - the LF of the following activity minus the activity time of T - the LS of the following activity minus the activity time of T - the largest EF for the three activities that are immediate predecessors for activity T
The following estimates of activity times (in days) are available for a small project: Activity Optimistic Most Probable Pessimistic A 4 5.0 6 B 8 9.0 10 C 7 7.5 11 D 7 9.0 10 E 6 7.0 9 F 5 6.0 7 Compute the expected activity completion times and the variance for each activity. An analyst determined that the critical path consists of activities B-D-F. Compute the expected project completion time and the variance of this path.
I need a detailed explanation and assistance to solve the this problem: A company decides to plan a project, with activities, precedences and deterministic durations given in the following table: Activity i Duration (days) Immediate Predecessors A 32 none B 21 none C 30 none D 45 A E 26 A, B F 28 C G 20 E, F a) What method should be used? Using only one pseudo-activity, draw the project network, with arcs labeled by the activity name and duration. b) Compute and display in a table the earliest and latest starting and finishing times, as well as slack, for each activity, and identify the critical path(s). C) Draw a Gantt chart of the schedule, based on earliest starting times d) Which activities must be completed by day 60 to ensure that the project is not delayed?
Consider the project network pictured. Assume that the timesattached to each node are the means and the variances of the project completion times, respectively.a. Identify all paths from nodes 1 to 6.b. Which path is critical based on the expected completion times?c. Determine the probability that the project is completed within 20 weeksassuming that the path identified in part (b) is critical.d. Using independence of paths A–C–E and B–F–G only, recompute the answer to part (c).e. Recompute the answer to part (c) assuming independence of the paths identified in part (a).f. Which answer, (c), (d), or (e), is probably the most accurate?
(g) Using the IF function, write a formula in J38 to display "Yes" if the activity is critical and display "No" if the activity is not critical. Copy the formula to cells J39:J44.To calculate the entire project's variance, we simply add variance for activities on the critical path. Screenshot attached tahnks!!!
A project has 7 activities P, Q, R, S, T, U, and V. Three time estimates (optimistic, most-likely, pessimistic) are used for each activity. Write down your answers to all parts of the question in the box given below. Give your answer to 3 decimal places. (Note (a) has of 2 parts and (b) has of 3 parts) For activity Q, these time estimates are as follows: optimistic time = 9, most-likely time = 14, pessimistic time = 20. Write down the average activity time for Q the variance of activity time for Q. The critical path of this project has a mean project time of 44 days and a standard deviation of 5 days. Assume project completion time is normally distributed. Find the probability that the project will be completed in 47 days. Find the probability that the project will take more than 40 days. We want to set a deadline for this project completion. If the probability of meeting this set deadline is 0.88, what will be the deadline for this project.
Consider a project that has been modeled as in the table below: a. Draw the PERT/CPM network for this project and determine the project’sexpected completion time μP and its critical path. b. Suppose the standard deviations of the activity durations are σA = 2,σB = 1, σC = 0, σD = 2, σE = 3, and σF = 0. Then please estimate the standarddeviation of the overall project’s standard deviation σP . c. Suppose for the standard Normal random variable Z, we know P[−1 ≤Z ≤ +1] ' 68%, P[−2 ≤ Z ≤ +2] ' 95%, and P[−3 ≤ Z ≤ +3] ' 99.7%. Then,approximately what time T is one for which there is only a less than 2.5% chance forthe completion time to beat (be shorter than)? *Please solve a-c and neatly write or type your answers, showing your steps, NO EXCEL*
Identify the term being described for each of the following: (a). A sequence of activities in a project. (b). The longest time sequence of activities in a project. (c). Used when two activities have the same starting and finishing points. (d). The difference in time length of any path and the critical path. (e). The statistical distribution used to describe variability of an activity time. (f). The statistical distribution used to describe path variability. (g). Shortening an activity by allocating additional resources.
A contractor needs to complete a project. The project involves 10 activities (labeled A, B, ..., J) with precedence relationship in network below. The estimate (in weeks) of the duration of each activityis in the table below. a. The mean and variance of the activity time for A~F are given in the table. Find the mean and variance of the activity time for the remaining arcs.b. Identify the critical path and then compute the mean and variance of the project completion time.c. What is the probability that the project is completed between 32 and 36 weeks?d. What completion time should the contractor claims to be 95% sure of completing the project by then?
Consider the following network for conducting a two-week (10 working days) computer training class: please refer to the picture I uploaded Find the crash cost per day. Which activities should be crashed to meet a project deadline of 10 days with a minimum cost? Assume partial crashing. Find the new cost. Is partial crashing an appropriate assumption in this kind of project?