OPERATION MANAGEMENT
2nd Edition
ISBN: 9781260242423
Author: CACHON
Publisher: MCG
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Chapter 15, Problem 2PA
Summary Introduction
To determine: The forecast for station on Friday using the naïve approach.
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A police station had to deploy a police officer for an emergency multiple times in the last four evenings. The table below shows the
number of emergencies each evening.
Weekday
Number of calls each day
Monday
9:48
Tuesday
3
Wednesday
8
Thursday
11
(Round your answer to 1 decimal place.)
What would be their forecast for the emergencies on Friday using a two-day moving average
approach?
Forecast for Friday
calls
A police station had to deploy a police officer for an emergency multiple times in the last four evenings. The table
below shows the number of emergencies each evening.
Weekday
Number of calls each day
Monday
5
Tuesday
Wednesday
Thursday
10
What would be their forecast for Friday using a naïve forecasting approach?
Forecast for Friday
calls
A security company had to deploy guards for emergencies multiple times in the last four evenings. The numbers of
emergencies for Monday, Tuesday, Wednesday, and Thursday were 7, 4, 8, and 11, respectively. What would be the
security company's forecast for the number of emergencies on Friday using an exponential smoothing forecasting
approach? (Use \alpha= 0.2 and a forecast for Monday of 10 emergencies)
Chapter 15 Solutions
OPERATION MANAGEMENT
Ch. 15 - When creating a time seriesbased forecast for the...Ch. 15 - Prob. 2CQCh. 15 - Prob. 3CQCh. 15 - Prob. 4CQCh. 15 - Prob. 5CQCh. 15 - Prob. 6CQCh. 15 - Prob. 7CQCh. 15 - Prob. 8CQCh. 15 - Using the moving average forecast, is it possible...Ch. 15 - Prob. 10CQ
Ch. 15 - Prob. 11CQCh. 15 - Prob. 12CQCh. 15 - Prob. 13CQCh. 15 - Deseasonalizing old demand data is the process of...Ch. 15 - Prob. 15CQCh. 15 - Prob. 1PACh. 15 - Prob. 2PACh. 15 - Prob. 3PACh. 15 - A police station had to deploy police officers for...Ch. 15 - MyApp is a small but growing startup that sees...Ch. 15 - Prob. 6PACh. 15 - Prob. 7PACh. 15 - Prob. 1CCh. 15 - CASE INTERNATIONAL ARRIVALS The U.S. Department of...Ch. 15 - Prob. 3C
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- Under what conditions might a firm use multiple forecasting methods?arrow_forwardScenario 3 Ben Gibson, the purchasing manager at Coastal Products, was reviewing purchasing expenditures for packaging materials with Jeff Joyner. Ben was particularly disturbed about the amount spent on corrugated boxes purchased from Southeastern Corrugated. Ben said, I dont like the salesman from that company. He comes around here acting like he owns the place. He loves to tell us about his fancy car, house, and vacations. It seems to me he must be making too much money off of us! Jeff responded that he heard Southeastern Corrugated was going to ask for a price increase to cover the rising costs of raw material paper stock. Jeff further stated that Southeastern would probably ask for more than what was justified simply from rising paper stock costs. After the meeting, Ben decided he had heard enough. After all, he prided himself on being a results-oriented manager. There was no way he was going to allow that salesman to keep taking advantage of Coastal Products. Ben called Jeff and told him it was time to rebid the corrugated contract before Southeastern came in with a price increase request. Who did Jeff know that might be interested in the business? Jeff replied he had several companies in mind to include in the bidding process. These companies would surely come in at a lower price, partly because they used lower-grade boxes that would probably work well enough in Coastal Products process. Jeff also explained that these suppliers were not serious contenders for the business. Their purpose was to create competition with the bids. Ben told Jeff to make sure that Southeastern was well aware that these new suppliers were bidding on the contract. He also said to make sure the suppliers knew that price was going to be the determining factor in this quote, because he considered corrugated boxes to be a standard industry item. Is Ben Gibson acting legally? Is he acting ethically? Why or why not?arrow_forwardScenario 3 Ben Gibson, the purchasing manager at Coastal Products, was reviewing purchasing expenditures for packaging materials with Jeff Joyner. Ben was particularly disturbed about the amount spent on corrugated boxes purchased from Southeastern Corrugated. Ben said, I dont like the salesman from that company. He comes around here acting like he owns the place. He loves to tell us about his fancy car, house, and vacations. It seems to me he must be making too much money off of us! Jeff responded that he heard Southeastern Corrugated was going to ask for a price increase to cover the rising costs of raw material paper stock. Jeff further stated that Southeastern would probably ask for more than what was justified simply from rising paper stock costs. After the meeting, Ben decided he had heard enough. After all, he prided himself on being a results-oriented manager. There was no way he was going to allow that salesman to keep taking advantage of Coastal Products. Ben called Jeff and told him it was time to rebid the corrugated contract before Southeastern came in with a price increase request. Who did Jeff know that might be interested in the business? Jeff replied he had several companies in mind to include in the bidding process. These companies would surely come in at a lower price, partly because they used lower-grade boxes that would probably work well enough in Coastal Products process. Jeff also explained that these suppliers were not serious contenders for the business. Their purpose was to create competition with the bids. Ben told Jeff to make sure that Southeastern was well aware that these new suppliers were bidding on the contract. He also said to make sure the suppliers knew that price was going to be the determining factor in this quote, because he considered corrugated boxes to be a standard industry item. As the Marketing Manager for Southeastern Corrugated, what would you do upon receiving the request for quotation from Coastal Products?arrow_forward
- The Baker Company wants to develop a budget to predict how overhead costs vary with activity levels. Management is trying to decide whether direct labor hours (DLH) or units produced is the better measure of activity for the firm. Monthly data for the preceding 24 months appear in the file P13_40.xlsx. Use regression analysis to determine which measure, DLH or Units (or both), should be used for the budget. How would the regression equation be used to obtain the budget for the firms overhead costs?arrow_forwardTom’s Towing LLC operates a fleet of tow trucks that it sends to help drivers in needon the nearby highway. The numbers of calls requesting a tow truck for Monday, Tuesday, Wednesday, and Thursday were 27, 18, 21, and 15, respectively. What would be itsforecast for Friday using a naïve forecasting approach?arrow_forwardSuppose a four period weighted average is being used to forecast demand. Weights for the periods are: Wt-4 = 0.1 Wt-3 = 0.2 Wt-2 = 0.3 Wt-1 0.4 Demand observed in the previous four periods was: At-4 = 325 At-3 = 361 At-2 = 478 At-1 = 400 What will be the demand forecast for period t? (Keep one decimal place in your answer).arrow_forward
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- Sales of tablet computers at Ted Glickman's electronics store in Washington, D.C., over the past 10 weeks are shown in the table below: Week 1 Demand 20 2 3 4 23 29 37 5 6 7 8 9 10 24 30 37 22 25 29 a) The forecast for weeks 2 through 10 using exponential smoothing with a 0.50 and a week 1 initial forecast of 20.0 are (round your responses to two decimal places): 1 Week 2 3 Demand 20 23 29 Forecast 20.0 4 37 5 24 6 7 8 30 37 22 9 10 25 29 b) For the forecast developed using exponential smoothing (a=0.50 and initial forecast 20.0), the MAD-sales (round your response to two decimal places). c) For the forecast developed using exponential smoothing (a=0.50 and initial forecast 20.0), the tracking signal=(round your response to two decimal places)arrow_forwardA police station had to deploy a police officer for an emergency multiple times in the last four evenings. The table below shows the number of emergencies each evening. Weekday Number of calls each day Monday Tuesday Wednesday Thursday 6. 12 13 (Round your answer to 1 decimal place.) What would be their forecast for the emergencies on Friday using a two-day moving average approach? 12.5 calls Forecast for Friday 2 of 5 Next > < Prevarrow_forwardSales of tablet computers at Marika Gonzalez's electronics store in Washington, D.C., over the past 10 weeks are shown in the table below: Week 2 3 1 Demand 19 23 29 4 36 5 6 7 8 9 10 26 28 35 24 24 30 a) The forecast for weeks 2 through 10 using exponential smoothing with a = 0.60 and a week 1 initial forecast of 19.0 are (round your responses to two decimal places): Week 1 2 3 4 Demand 19 23 29 36 Forecast 19.0 5 6 7 26 28 35 8 9 10 24 30 24 b) For the forecast developed using exponential smoothing (a=0.60 and initial forecast 19.0), the MAD = sales (round your response to two decimal places). c) For the forecast developed using exponential smoothing (x=0.60 and initial forecast 19,0), the tracking signal = (round your response to two decimal places).arrow_forward
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