Chapter 8 Internet Homework Problems 8.26 Katie Reynolds owns two exclusive women’s clothing stores in Miami. In her plan to expand to a third location, she has narrowed her decision to three sites—one in a downtown office building, one in a shopping mall, and one in an old Victorian house in the suburban area of Coral Gables. She feels that rent is absolutely the most important factor to be considered, although walk-in traffic is 90% as important as rent. Further, the more distant the new store is from her two existing stores, the better. She weights this factor to be 80% as important as walk-in traffic. Katie developed the table below, in which she graded each site from A to D, with A being best. Which site is preferable? Downtown Rent D Walk-in traffic B Distance from existing storesB Shopping Mall Coral Gables House C A A A D C 8.27 When placing a new medical clinic, county health offices wish to consider three sites. The pertinent data are given in the table below. Which is the best site (assuming a higher weight is more desirable than a lower one)? Scores Location Factor Weight Downtown Facility utilization 9 Average time per emergency trip8 Employee preferences 5 Accessibility to major roadways 5 Land costs 4 Suburb A 9 6 2 8 2 Suburb B 7 6 5 4 9 6 8 6 5 6 8.28 A Detroit seafood restaurant is considering opening a second facility in the suburb of West Bloomfield. The table below shows its ratings of five factors at each of four potential sites. Which site should be selected? Site Factor Weight 1 2 3 4 10 10 25 20 15 70 85 70 80 90 60 90 60 90 80 85 80 85 90 90 90 60 90 80 75 Affluence of local population Construction and land cost Traffic flow Parking availability Growth potential Which site should be recommended? 8.29 The fixed and variable costs (in U.S. dollars) for the new recycling plant that Eldon Yi is opening in Australia are computed as follows: Cost Fixed Variable Victoria $1,000,000 $73/unit Perth $800,000 $112/unit a) Over what range is each city preferable? b) For a recycling of 5,000 units, which site is best? 1 8.30 The fixed and variable costs for four potential plant sites for a ski equipment manufacturer are shown below: Site Atlanta Burlington Cleveland Denver Fixed Cost Per Year Variable Cost Per Unit $125,000 75,000 100,000 50,000 $6 5 4 12 a) Graph the total-cost lines for the four potential sites. b) Over what range of annual volume is each location the preferable one (that with lowest expected cost)? c) If expected volume of the ski equipment is 5,000 units, which location would you recommend? 8.31 Itron Health and Fitness has several production facilities scattered around the central and northern part of Iowa. It would be desirable to have a distribution center from which to send product to retailers such as Sears, WalMart, Kmart, and large sporting equipment retailers. Using the data in the following table, calculate the center of gravity location for the proposed new facility. City A B C D E F G H Map Coordinates (x, y) Truck Round-trips per Day (2, 1) (2, 13) (4, 17) (7, 7) (8, 18) (12, 16) (17, 4) (18, 18) 20 10 5 20 15 10 20 20 8.32 The main post office in Tampa, Florida, is due to be replaced with a much larger, more modern facility that can handle the tremendous flow of mail that has followed the city’s growth since 1970. Since all mail, incoming or outgoing, travels from the seven regional post offices in Tampa through the main post office, its site selection can mean a big difference in overall delivery and movement efficiency. Using the data in the following table, calculate the center of gravity location for the proposed new facility. Regional Post Office Truck Round Trips Map Coordinates (x, y) Per Day Ybor City Davis Island Dale-Mabry Palma Ceia Bayshore Temple Terrace Hyde Park (10, 5) (3, 8) (4, 7) (15, 10) (13, 3) (1, 12) (5, 5) 2 3 3 2 6 5 3 10 8.33 Prentice Hall Publishing is going to add two additional distribution centers to its European theater of operations. One center will be located in each of two countries selected from the set of four candidates. The four potential countries and 15 CSF ratings are given below. The CSFs were evaluated on the basis of a 1 to 5 rating system, where 1 means least desirable country and 5, the most desirable. Candidate Country Ratings Critical Success Factors 1. rate of technology change 2. innovations in process design 3. number of skilled workers 4. national literacy rate 5. stability of government 6. product liability laws 7. export restrictions 8. similarity in language 9. work ethic 10. tax rates 11. inflation 12. availability of raw materials 13. interest rates 14. population 15. number of miles of highway Spain England Italy Poland 1 3 1 2 5 1 4 1 4 1 5 5 4 1 1 3 5 5 5 1 2 2 3 2 3 3 5 5 3 5 5 5 3 2 1 1 1 1 5 5 5 5 2 4 5 2 4 5 3 1 2 5 2 2 2 2 5 4 1 1 On the assumption that each of the 15 CSFs is equally important, which two countries would be the best choices for locating the two new distribution centers? 8.34 In Problem 8.33, if the first 5 CSF ratings are each given a mathematical weight of 0.1 and the remaining 10 CSFs should be equally weighted at 0.05, what are the best two countries for the new distribution centers? 3