Q14 You work for a company that makes cell phones and have been made project manager for the design of a new cell phone. Yoursupervisors have already scoped the project, so you have a list showing the work breakdown structure, and this includes major projectactivities. You must plan the project schedule and calculate project duration. Your boss wants the schedule on his desk tomorrowmorning!You have been given the information in Exhibit 4.13. It includes all the activities required in the project and the duration of eachactivity. Also, dependencies between the activities have been identified. Remember that the preceding activity must be fullycompleted before work on the following activity can be started.Your project is divided into five major subprojects. Subproject "P" involves developing specifications for the new cell phone. Here,decisions related to such things as battery life, size of the phone, and features need to be made. These details are based on how acustomer uses the cell phone. These user specifications are redefined in terms that have meaning to the subcontractors that willactually make the new cell phone in subproject "S" supplier specifications. These involve engineering details for how the product willperform.The individual components that make up the product are the focus of subproject "D." Subproject "I" brings all the componentstogether, and a working prototype is built and tested.Finally, in subproject "V" suppliers are selected and contracts are negotiated.Exhibit 4.13: Work Breakdown Structure and Activities for the Cell Phone Design ProjectMAJOR SUBPROJECTS/ACTIVITIES.Product Specifications (P)Market research.Overall product specificationsSupplier specifications (S)Product design (D)Product integration (1)HardwareSoftwareSubcontracting (V)HardwareSoftwareBatteryDisplayCameraOuter coverHardwareUser interfaceSoftware codingPrototype testingSuppliers selectionContract negotiation.ACTIVITY IDENTIFICATION2 O ANA SSP3S2I1121314V1V2DEPENDENCYP1P2P3P4P4S1S1S1D1, D2, D3D4D21211, 13S1,S214, V1DURATION (WEEKS)24555612143444102 Subcontracting (V)User interfaceSoftware codingPrototype testingSuppliers selectionContract negotiationMinimum number of weeksSS HENa. Determine the minimum number of weeks for completing the project.The duration of the project will14toV2D21211, 13weeks.S1,S214, V1b. Your boss would like you to study the impact of making two changes to how the project is organized. The first change involvesusing dedicated teams that would work strictly in parallel on the activities in each subproject. For example, in subproject P (productspecifications) the team would work on P1, P2, P3, and P4 all in parallel. In other words, there would be no precedence relationshipswithin a subproject-all tasks within a subproject would be worked on at the same time and each would take the same amount of timeas originally specified. With this new design, all the subprojects would be done sequentially with P done first, then S, D, I, and finally V.The second change your boss would like you to consider would be to select the suppliers during subproject P and have them workdirectly with the dedicated teams as described in the first change. This would involve adding an additional activity to subproject Pcalled supplier selection and contract negotiation (P5) with a duration of 12 weeks. This new activity would be done in parallel with P1,P2, P3, and P4. Subprojects S and V would be eliminated from the project. What would be the expected impact on how long it wouldtake to complete the project if this additional change were made?444 2210

Subcontracting (V) User interface Software coding Prototype testing Suppliers selection. Contract negotiation Minimum number of weeks a. Determine the minimum number of weeks for completing the project. 12 13 14 The duration of the project will V1 V2 to D2 12 11, 13 weeks. S1,S2 14, V1 b. Your boss would like you to study the impact of making two changes to how the project is organized. The first change involves using dedicated teams that would work strictly in parallel on the activities in each subproject. For example, in subproject P (product specifications) the team would work on P1, P2, P3, and P4 all in parallel. In other words, there would be no precedence relationships within a subproject-all tasks within a subproject would be worked on at the same time and each would take the same amount of time- as originally specified. With this new design, all the subprojects would be done sequentially with P done first, then S, D, I, and finally V. The second change your boss would like you to consider would be to select the suppliers during subproject P and have them work directly with the dedicated teams as described in the first change. This would involve adding an additional activity to subproject P called supplier selection and contract negotiation (P5) with a duration of 12 weeks. This new activity would be done in parallel with P1, P2, P3, and P4. Subprojects S and V would be eliminated from the project. What would be the expected impact on how long it would take to complete the project if this additional change were made? 4 4 4 10 2

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...