please read carefully, the answer is not $540 & "by how many WEEKS, should each activity be crashed in order to meet the deadline. Please provide hand written answer
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please read carefully, the answer is not $540 & "by how many WEEKS, should each activity be crashed in order to meet the deadline.
Please provide hand written answer
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- A project has the activity duration and cost information indicated in the table where all times are in weeks. What is the total cost for completing this project in 50 days? Activity Predecessor Normal Time Normal Cost Crash Time Crash Cost A -- 8 $12,000 5 $21,000 B A 12 $20,000 9 $30,000 C A 15 $24,000 10 $60,000 D B 3 $10,000 2 $15,000 E C 9 $17,000 6 $34,000 F E 7 $5,000 6 $6,000 G D 8 $14,000 6 $20,000 H A 12 $22,000 10 $30,000 I H 6 $50,000 5 $55,000 J F, G, I 11 $33,000 9 $50,000Using your results from Problem 6,(a) Calculate the probability that the project will be completedin 38 weeks.(b) Calculate the probability that the project will be completedin 42 weeksYou have collected the data for a Time-Cost CPM Scheduling model analysis. The time is in days and the project "direct costs" are given below. Immediate Normal Crash Normal Crash Activity Predecessor Time Time Cost (Direct) Cost (Direct) A None 3 2 $300 $408 B A 3 3 $100 $100 C A 1 1 $200 $200 D B and C 3 2 $400 $550 E D 2 1 $500 $900 F E 3 3 $200 $200 G F 2 2 $200 $200 The indirect costs for the project are determined on a daily duration basis. If the project lasts 16 days the total indirect costs are $408, 15 days they will be $350, 14 days they will be $200, and 13 days they will be $100. If you crash this project by one day what is the total (i.e., direct and indirect) project cost?
- A group of developers is building a new shopping center. A consultant for the developers has developedthe following table of activities, durations and predecessors. Determine the earliest start times andfinish times, latest start and finish times, activity slack, critical path and duration for the project. Thereis a Bonus for finishing the project at 90% of the projected date. The bonus for early completion is$50,000. Which activities should be crashed, if the cost for 1 week reduction, for any activity, is $3500per week, and what is the total cost of crashing? And, Net Bonus, if any.Your company has just received an order from a good customer for a specially designed electric motor. The contract states that, starting on the 13th day from now, your firm will experience a penalty of $100 per day until the job is completed. Indirect project costs amount to $200 per day. The data on direct costs and activity precedence relationships are given in Table. Electric Motor Project Data Activity Normal Time(days) Normal Cost ($) Crash Time (days) Crash Cost ($) ImmediatePredecessor(s) A B C D E F G H 4 7 5 6 3 11 4 3 1000 1400 2000 1200 900 2500 800 300 3 4 4 5 2 6 3 1 1300 1200 2700 1400 1100 3750 1450 500 None None None A B C D,E F,G a. Draw the project network diagram.b. What completion date would you recommend?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 each activity. The total project completion time and the critical path should also be determined. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s)A 6 - E 5 BB 8 - F 6 BC 2 A G 9 C, ED 3 A H 7 D , F Dave's earilest start (ES) and earliest finish (EF) are: Activity ES EF A 0 6 B 0 ? C D E F G H
- Use the following project status information to calculate each of the requested EVM numbers below (a-i).The project status is reported at the end of week 13. Task Budget Cost Budget Duration Status as of Week 13 A $5,000 2 Weeks 100 percent complete $5,000B $8,500 3 Weeks 100 percent complete $9,000C $15,000 4 Weeks 75 percent complete $14,000D $10,000 4 Weeks 50 percent complete $9,000 E $12,000 4 Weeks Not startedF $15,000 5 Weeks Not started a. Planned Valuedb. Actual costc. Cost varianced. Schedule variancee. Cost performance indexf. Schedule performance indexg. Budget at completionh. Estimation to completei. Estimation at completionConsider the following network for conducting a two-week (10 working days) computer training class: please refer to the picture I uploaded Find the crash cost per day. Which activities should be crashed to meet a project deadline of 10 days with a minimum cost? Assume partial crashing. Find the new cost. Is partial crashing an appropriate assumption in this kind of project?Given the following project: Activity Predecessor Normal Time (day) Normal Cost ($) Crash Time (day) Crash Cost ($) A - 4 800 2 1300 B - 10 1200 7 2400 C A 6 1100 4 1700 D A,B 7 1000 4 1600 E C 10 2000 8 3000 F C,D 5 900 - - (a) Draw the network and find the critical path duration of the project, total cost of project using normal times. (b) Calculate the maximum time reduction and crash cost-per-day (all activities may be partially crashed) for each activity. Then fill the table below. (Note: Activity “F” cannot be crashed) Activity Maximum Time Reduction (day) Cost to Crash per Period ($/day) A B C D E F (c) Find the optimal way of getting a 20-day delivery time. What is the project cost? (d) Find the optimal way of getting a 18-day delivery time. What is the project cost?
- 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 each activity. The total project completion time and the critical path should also be determined. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s)A 7 - E 4 BB 8 - F 7 BC 4 A G 11 C, ED 1 A H 6 D , F Dave's earliest start (ES) and earliest finish (EF) are: Activity ES EF A 0 7 B 0 8 C 7 11 D 7 88 E 8 12 Part 7 F ? ? G ? ? H ? ?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*Widgetco is making a prototype of a new product. The productconsists of two subassemblies. Before building either subassembly, the firm must purchaseraw materials and train workers. Before the subassemblies can be combined, subassembly2 must be inspected. The following table describes the project:Activity Description Requires Duration (Days)A Train workers 6B Purchase materials 9C Make subassembly 1 A,B 8D Make subassembly 2 A,B 7E Inspect subassembly 2 D 10F Combine subassemblies C, E 12G Subassembly 2 safety report E 6How quickly can Widgetco complete this project?(a) Define decision variables.(b) Write a suitable LP problem formulation.