Operations Management
11th Edition
ISBN: 9780132921145
Author: Jay Heizer
Publisher: PEARSON
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Chapter 3, Problem 17DQ
Describe the meaning of slack, and discuss how it can be determined.
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- Identify the term being described for each of the following: g. Shortening an activity by allocating additional resources.arrow_forwardTo complete the rotor assembly for an experimental spacecraft, Gilbert has laid out nine major activities involved. These activities have been labelled A to I in the table below, which also shows their estimated completion times (in weeks) and their immediate predecessors. EVENTS AND ACTIVITIES FOR ROTOR ASSEMBLY ACTIVITIES TIMES (IN WEEKS) PRECEDING EVENT A M B A 1 2 3 - B 2 3 4 A C 4 5 6 A D 8 9 10 A E 2 5 8 B F 4 5 6 B, C G 1 2 3 F, D H 1 3 5 E, F I 2 4 6 H, G Key: A is optimist time, M is the most likely time and B is the pessimistic time. a) Calculate the expected time for each activity b) Draw a Gantt Chart from the same information above c) State the critical path and the maximum number of weeks the project will take to be completed. d) Discuss the pros and cons of using the Gantt chart as a planning and scheduling tool?arrow_forwardThe product development group at “Griffin” Company has already worked on new computer software products that has potential to know a large market share. Via an outside source, London Management has learned that a competitor is working to bring a similar product to market. As a result, London's top management increased its pressure on the product development group. Group leaders have turned to CPM / PERT as an aid to scheduling remaining activities before new products can be brought to market. The estimated time of activity in a day is as follows a.Create the the network if it is accelerated according to the schedule above b.Find the cost and the duration c.Determine the path and critical activitiesarrow_forward
- The product development group at “Griffin” Company has already worked on new computer software products that has potential to know a large market share. Via an outside source, London Management has learned that a competitor is working to bring a similar product to market. As a result, London's top management increased its pressure on the product development group. Group leaders have turned to CPM / PERT as an aid to scheduling remaining activities before new products can be brought to market. The estimated time of activity in a day is as follows Question: Create an initial network Find the cost and the duration Determine the path and critical activitiesarrow_forwardDiscuss in brief slack variables?arrow_forwardUnder what conditions is the assignment method appropriate?arrow_forward
- Ed is planning to build a treehouse as a present for his son's upcoming 10th birthday. The details for each task are as follows: DE F G AD C,E F 12 Task A B Preceding Task Duration (day) | 12 A B 10 12 5 Cost (RM) 50 140 120 60 70 80 60 (a) Obtain the following: • The number of days it will take for Ed to finish building the treehouse. • Which tasks are cannot be delayed at all without delaying the whole project. • The total cost of building the treehouse. (b) Due to illness, Ed has to begin building the treehouse later than planned. He reckons that he must reduce the build duration by 3 days to complete the treehouse by his son's birthday. He has determined the crash cost and crash time for each task as follows: Task А В С DE F G Crash Time (day) | 12 8 9 8 10 5 6 Crash Cost (RM) | 50 170 180 70 95 80 60 Obtain the following: • All tasks that are crashed and by how much. • The new total cost for building the treehouse.arrow_forwardMake a list of the tasks that is necessary for Management Trainee Officer job in private banks. Develop a table showing each task, its duration, and preceding event(s). Develop a Network diagram for these tasks. Highlight the critical path on your Network diagram and find out slack of all activities.arrow_forwardA Work Breakdown Structure (WBS) identifies deliverables, activities, and tasks. Which statement describes a task?arrow_forward
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