7.7.1 -Bus 190 - Chapter 9 Homework Problems (MLOs 7.1 - 7.4) Problems: #1. Apartment Building Renovation. Jefferson Park Apartments is undertaking a summer renovation of its main building. The project is scheduled to begin May 1, and a September 1 (17-week) completion date is desired. The manager identified the following renovation activities and their estimated times. (MLOs 1 &2) Activity Immediate Predecessor Time A 3 B 1 C 2 D A, B, C 4 E C, D 5 F A 3 G D, F 6 H E 4 a.Draw a project network. b.What are the critical activities? c.What activity has the most slack time? d.Will the project be completed by September 1? #2. Software Development at Landon Corporation. The product development group at Landon Corporation has been working on a new computer software product that has the potential to capture a large market share. Through outside sources, Landon's management learned that a competitor is working to introduce a similar product. As a result, Landon's top management increased its pressure on the product development group. The group's leader turned to PERT/CPM as an aid to scheduling the activities remaining before the new product can be brought to the market. (MLOs 71 - 7-4) The project network is depicted in the following diagram. The activity time estimates (in weeks) are listed in the following table. Activity Optimistic Most Probable Pessimistic A 3.0 4.0 5.0 B 3.0 3.5 7.0 C 4.0 5.0 6.0 D 2.0 3.0 4.0 E 6.0 10.0 14.0 F 7.5 8.5 12.5 G 4.5 6.0 7.5 H 5.0 6.0 13.0 I 2.0 2.5 6.0 J 4.0 5.0 6.0 a.Develop an activity schedule for this project and identify the critical path activities. b.Based solely on the critical path, what is the probability that the project will be completed so that Landon Corporation may introduce the new product within 25 weeks? c.Based solely on the critical path, what is the probability that the project will be completed so that Landon Corporation may introduce the new product within 30 weeks? #3. Process Improvement Project at Starbucks. Starbucks management and employees have recently completed a kaizen event during which they identified ways to improve the store layout. To implement these changes, Starbucks has devised the following project network. (MLO 7.1) The activity times (in days) and costs (in dollars) are listed in the following table. Activity A B C D E F G Time 3 2 5 5 6 2 2 Cost 800 1200 2000 1500 1800 600 500 a.Find the critical path and the expected project completion time. b.What is the total project cost