Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine ES, EF, LS, LF, and slack for eachactivity. The total project completion time and the critical path should also be determined. Here are the activity times:TimeActivity (weeks)ABCDDave's earliest start (ES) and earliest finish (EF) are:500 3 38ImmediatePredecessor(s)AAActivityABCTimeActivity (weeks)5597EFGHES00EF588ImmediatePredecessor(s)BBC, ED, F

Activity Duration A5B8C3D3E5F5G9H7

Answered: Fletcher was able to determine the…

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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Hoff & Catherine Building company has plans to build a City Centre for the Government. The stages of the project are depicted in the table below: Activity Immediate Predecessor Duration (weeks) Remarks A - 2 B A 7 C B 5 D C 6 E C 4 F E 10 G D 7 H E, G 12 I C 7 J F, I 9 K J 4 L J 5 M H 5 N K,L 10 Calculate the earliest start, earliest finish, latest start, latest finish and slack time for each activity. Calculate the critical path How long does it take to complete the project assuming no delays?
12:23 Ill 5G Problem 1 The following table gives expected times and variances for a probabilistic duration type of project (we are not given and we don't need the optimistic, most likely, and pessimistic time estimates). Activity Expected Time Variance A 4 0.44 B 3 0.69 C 7 2.25 D 11 2.25 E 4 0.11 F 9 1.36 G 6 0.44 H 6 0.69 I 7 1.36 J 13 1.00 K 3 0.44
Humber Web Design Co. is organizing a new project to increase efficiency and improve relations with their clients. The project manager for this initiative has broken the project up into several parts as follows: Activity Activity Description Immediate Predecessor Activity time (days) A Identify Client Base ― 44 B Develop Client Prospectus ― 35 C Perform Design Analysis ― 46 D Program Back End A, B, C 43 E Program Front End A 27 F Project Consolidation D, E 36 (a) For the given project, fill in the nodes of the network diagram below. A E 44 27 Start B D F Finish Time 35 43 36 Time C 46 (b) Using the network diagram, fill in the table. Make sure that you put the values in the appropriate columns. Activity Earliest Start (ES) Latest…
The following table shows estimates of activity times (in weeks) for a project: Optimistic Time 5 Activity A B с D EFG 1 4 5 6 2.5 7.5 Most Probable Time 5.5 3 5 5.5 7 b. What is the probability that the project will be completed within 31 weeks? 3 8.5 Suppose that the critical path is A-C-D-E-G. Use Appendix A to answer the questions. Do not round intermediate calculations. Round your answers to three decimal places. a. What is the probability that the project will be completed within 34 weeks? d. What is the probability that the project will be completed in 33 weeks? C. What is the probability that the project will be completed in more than 32 weeks? Pessimistic Time 9 5 6 9 8 3.5 12.5
Three activities are candidates for crashing on a project network for a large computer installation (all are, of course, critical). Activity details are in the following table: Normal Activity Time (days) A B с 7 4 11 Crash Time (days) 6 2 9 Normal Cost $5,000 $1,400 $4,200 Total Cost with Crashing Immediate Predecessor(s) $5,500 $3,100 $6,200 A
EX6-21 (Algo) Given the following information, compute... Given the following information, compute the early, late, and slack times for the project network. Additional Lag Relationships ID Task Duration Predecessor Lag Interview users 10 Define new features A Start-start A to B Finish-finish A to B Order components Build prototype Finish-start C to D 7 E Test Finish-start C to E 4 Finish-finish D to E 4 F Field test 10 E Lag 5 A Lag 4 6 10 Lag 4 B D F 8 3 Lag 7 6. 10 Lag 6 What is the ES for Activity D? What is the LF for Activity E? What is the slack for the start of Activity E? What is the slack for the end of Activity E? What is the slack for the end of Activity B? What is the length of the project? time periods. AB
QUESTION 16 Refer to the project addressed in questions 21-30 of your Quiz 1 and associated worked solutions used in our review session. The following table of probabilistic time estimates (in weeks) and activity predecessors are provided for the project. Activity A B D E Table 1 Reference: Ref 1 optimistic most likely time time 3 4 2 6 5 5 8 3 9 9 pessimistic time 7 10 5 12 15 Activity Predecessor A A B, C D Using Table 1, which of the following statements are correct? O A. The latest finish time of activity B is the same as its earliest finish time O B. Activity A is critical because it is the starting activity in the project O C. Activity D must be critical because it is the only predecessor of activity E O D. Answers A and B are correct O E. Answers A and C are correct
Project path a-co f has these activity time estimates in days: Optimistic Activity Time Most Pessimistic Likely Time (to) (Im) (tp) a 20 25 30 25 30 32 e 15 17 20 f 18 18 18 a. Compute the expected time or duration (te) for each activity. b. Compute the variance (Vt) for each activity. c. Compute the expected duration and variance for the path. (6
Q2: For the activities shown below, use Activity on Arrow diagram (A.O.A) to find: 1. Total Duration of the project 2. Critical paths 3. Create a table for the following information (E.S, E.F, L.F, L.S and T.F) Activity A B C D Duration 5 7 4 8 days Followed by DE D 4F G H 1 E F 4 8 J J G 7 J K K H 9 1 J K L M N R 12 9 K M L 6 5 LN 3 15 R 7 R 8 1
7. The project information for the custom order project of the Air Control Company is presented here. Draw a project network for this project. Compute the early and late activity times and the slack times. Identify the critical path. ID Description Predecessor Time A Order review None 2. 3 Order standard parts Produce standard parts Design custom parts Software development A 10 D. 13 18 Manufacture custom hardware 15 Assemble В, F 10 H. Test E, G You houo nignod a contract to huild a garage for the Simpsons You will receive a D F AAAC

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