1- IF the (Most Optimistic time (least time) to, Most likely time tm, Most Pessimistic (Greatest time) tp) are shown in the network bellow. Calculate the variance and the expected time for each activity. 3-6-10 6-7-12 7-9-12 2 3 4 8-12-17 10-12-15 8-13-18 5 6 12-14-15 8 13-16-19 10-13-17 4-7-10 10-12-14 6-8-12
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- 2:30 PM ě 0.3KB/s 1ll 54 4G+ 00:15:12 Remaining Multiple Choice The primary difference between PERT and CPM is that CPM uses probabilities on the activity times and PERT does not. O. PERT considers activity costs and CPM does not. PERT can assign probabilities to activity times and CPM does not. CPM considers activity costs and PERT does not. 5 of 20 IIA project consists of five activities as shown in the following table. Activity Floor sanding Floor buffing Paint mixing Wall painting Ceiling painting Optimistic Time (hr) Most Probable Time (hr) 4 4 0.5 2 3 5 5 Сл 1 3 7.5 Pessimistic Time (hr) 6 6 1.5 10 9 Naturally, the paint mixing precedes the painting activities. Also, both ceiling painting and floor sanding must be done prior to floor buffing. (a) Construct the PERT/CPM network for this problem.Consider a construction project with the following data on precedence relationships, durations, and costs: Activity Immediate predeccessor (s) Normal Time (days) Normal Cost ($) Crash Time (Days) Crash Cost ($) A - 6 120 4 170 B - 4 120 2 220 C A 3 195 2 270 D A 4 320 2 520 E B, C 7 700 4 1075 F D, E 5 650 2 1100 G E 10 1600 6 2300 F and G are the terminal activities of the project. (a) Find the critical path. (b) Find the project completion time and the corresponding cost. (c) Suppose it is required to complete the project in 22 days. Find which activities to crash and by how much, to yield the minimum project cost. Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
- Management Firm is a consulting company that specializes in the development of decision support systems. Time (Weeks) Activity Description ImmediatePredecessor Optimistic Most Probable Pessimistic A Report generation 2 8 12 B Web scraping 4 9 11 C Testing A, B 1 1 1 (b) Using all paths through the project network, estimate the probability that the project will be complete within 11 weeks. (Round your answer to four decimal places.)Normal Time Problem 1 You are the manager of a project to improve a billing process at your firm. The following table contains the data you will need to conduct crashing of the project duration. Indirect costs are $1,600 per week, and penalty costs are $1,200 per week after Week 12. Activity Immediate Predecessor(s) Crash Time (weeks) Normal (Direct) Cost Crash Cost (weeks) ($) ($) A 4 1 5,000 8,000 B 5 2 8,000 11,000 C A 1 1 4,000 4,000 Ꭰ B 6 3 6,000 12,000 E B, C 7 6 4,000 7,000 F Ꭰ 7 6 4,000 7,000 What is the optimum choice for project duration?Using PERT, Adam Munson was a ble to determinethat the expected project completion time for the construction ofa pleasure yacht is 21 months, and the project va riance is 4.a) What is the probability that the project will be completed in17 months?b) What is the probability that the project will be completed in20 months?c) What is the probability that the project will be completed in23 months?d) What is the probability that the project will be completed in25 months?e) What is the due date that yields a 95% chance of completion?
- What is the minimum cost of crashing the following project that Roger Solano manages at Slippery Rock University by 4 days? Normal Cost $800 $200 $600 $750 $1,200 Normal Crash Activity Time (days) Time (days) 4 3 8 6 The total cost of crashing the project by 4 days is $ ABCDE 487 355 (Enter your response as a whole number.) Total Cost with Crashing Immediate Predecessor(s) $1,500 $1,650 By how many days should each activity be crashed to reduce the project completion time by 4 days? Fill in the table below. (Enter your responses as whole numbers.) Each Activity Should be Reduced BY (days) Activity A B C D E $1,100 $600 $650 A C1.The chief engineer of firm XYZ is responsible for supervising the construction work of a road. He has identified the activities and their durations for each stage of operation. Activity Duration (days) Preceding activities A 5 - B 10 - C 1 - D 8 B E 10 B F 9 B G 3 A,D H 7 A,D I 4 F J 3 F K 5 C,J L 8 H,E,I,K M 4 CJ Draw a network diagram (AOA) for this road construction project. Which are the critical activities? How long the project will take?2. KAB Wiring and Electric is a company that installs wiring and electrical fixtures in residential constructionBella One, CEO of the company, has been concerned with the amount of time that it takes to complete wiring jobs. Some of his workers are very unreliable. A list of activities and their optimistic, pessimistic, and most likely completion times in days are given in the following table: Completion Times (days) Activity Immediate Predesessors Optimistie Most Likely Pessimistie A M 1 B А, Е 1 1 7 E M 4 6. H A 10 14 M a. Determine the probability that the project will be completed within 23 days. b. Compute an interval estimate of the number of days to complete the project for probability of 96.6%. c. Compute the probability that the project will ake longer than "expected completion time + 2.5" days.
- What is the minimum cost of crashing the following project at Sawaya Robotics by 4 days? NORMAL CRASH TIME (DAYS) TIME (DAYS) NORMAL COST 8 6 6 4 ACTIVITY Design (A) Wiring (B) Chip install (C) Software (D) Testing (E) 8 5335 400 1,000 600 1,000 1,100 CRASH COST 450 1,100 700 1,300 1,625 IMMEDIATE PREDECESSOR(S) A, B C The minimum cost of crashing the following project at Sawaya Robotics by 4 days is $900 (enter your response as a whole number).EX6-12 (Algo) You are creating a customer database... You are creating a customer database for the Lehigh Valley IronPigs minor league baseball team. Given the information below, complete the forward and backward pass, compute activity slack, and identify the critical path. How long will this project take? ABCDACHSX K L Description Systems Subsystem A design Subsystem B design Subsystem C design Program A Program B Program C Subsystem A test Subsystem B test Subsystem C test Integration Integration test days. Predecessor None A A A B с D E F G H, I, J K Time (days) 7 3 1 3 5 15 5 3 3 5 3B/U pe Activity A B D 11. A project has the activity duration and cost information indicated in the table where all times are in weeks. There is a penalty of $4,000 per week for every week the project exceeds 37 weeks. What is the lowest total cost for completing this project? Predecessor Time 18 11 A A B C E D Normal A H 12 15 3 19 Asbe de ABC' AMBBC RACE AB 7 8 12 6 Normal Cost Crash Time Crash Cost $22,000 $32,000 $62,000 $18,000 $35,000 $8,000 $23,000 $32,000 $56,000 $12,000 5 $18,000 19 $22,000 $9,000 $15,000 $5,000 $13,000 $20,000 $45,000 2 5 4