a)
To determine: The reason why managers are forced to use simulation in dealing with the problem of inventory order policy.
Introduction: Simulation is a model that can be used in operations, which would imitate the real world process. Simulation uses random sampling for the generation of realistic variability.
b)
To determine: The reason why managers are forced to use simulation in dealing with the problem of ships docking in a port to unload.
Introduction: Simulation is a model that can be used in operations, which would imitate the real world process. Simulation uses random sampling for the generation of realistic variability.
c)
To determine: The reason why managers are forced to use simulation in dealing with the problem of bank-teller service windows.
Introduction: Simulation is a model that can be used in operations, which would imitate the real world process. Simulation uses random sampling for the generation of realistic variability.
d)
To determine: The reason why managers are forced to use simulation in dealing with the problem of Country U’s economy.
Introduction: Simulation is a model that can be used in operations, which would imitate the real world process. Simulation uses random sampling for the generation of realistic variability.
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Operations Management
- At the beginning of each week, a machine is in one of four conditions: 1 = excellent; 2 = good; 3 = average; 4 = bad. The weekly revenue earned by a machine in state 1, 2, 3, or 4 is 100, 90, 50, or 10, respectively. After observing the condition of the machine at the beginning of the week, the company has the option, for a cost of 200, of instantaneously replacing the machine with an excellent machine. The quality of the machine deteriorates over time, as shown in the file P10 41.xlsx. Four maintenance policies are under consideration: Policy 1: Never replace a machine. Policy 2: Immediately replace a bad machine. Policy 3: Immediately replace a bad or average machine. Policy 4: Immediately replace a bad, average, or good machine. Simulate each of these policies for 50 weeks (using at least 250 iterations each) to determine the policy that maximizes expected weekly profit. Assume that the machine at the beginning of week 1 is excellent.arrow_forwardQuestion 1: Market planning, Inc. a marketing research firm, has obtained the prescription sales data for 20 independent pharmacies (attached). In this table y is the average weekly prescription sales over the past year (in units of $1,000), x1 is the floor space (in square feet), x2 is the percentage of floor space allocated to the prescription department, x3 is the number of parking spaces available to the store, x4 is the weekly per capita income for the surrounding community (in units of $100), and x5 is a dummy variable that equals 1 if the pharmacy is located in a shopping center and 0 otherwise. Regress average weekly prescription sales against different combinations of the independent variables. What is the best model? Discuss what the parameter coefficients say about prescription sales.arrow_forwardPrevious Problem Problem List Next Problem (1 point) Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. Researchers found that visually impaired students averaged 9.2 hours of sleep, with a standard deviation of 2.24 hours. Assume that the number of hours of sleep for these visually impaired students is normally distributed. (a) What is the probability that a visually impaired student gets less than 6.4 hours of sleep? answer: (b) What is the probability that a visually impaired student gets between 6.2 and 8.84 hours of sleep? answer: (c) Thirty percent of students get less than how many hours of sleep on a typical day? answer: hours Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining.arrow_forward
- Figure shows summer air visibility measurements for Denver, Colorado. The acceptable visibility standard is 100, with readings above 100 indicating clean air and good visibility, and readings below 100 indicating temperature inversions caused by forest fires, volcanic eruptions, or collisions with comets.a. Is a trend evident in the data? Which time-series techniques might be appropriate for estimating the average of these data?b. A medical center for asthma and respiratory diseases located in Denver has great demand for its services when air quality is poor. If you were in charge of developing a short-term (say, 3-day) forecast of visibility, which causal factor(s) would you analyze? In other words, which external factors hold the potential to significantly affect visibility in the short term?c. Tourism, an important factor in Denver’s economy, is affected by the city’s image. Air quality, as measured by visibility, affects the city’s image. If you were responsible for development of…arrow_forwardDifference between the actual value and the value that was predicted for a given period.arrow_forwardFC.51 Madison Memorial Hopsital is considering purchasing a new ambulance. The decision will rest partly on the anticipated mileage to be driven this year (2023). The miles driven during the past eight years are as follows: Year Miles Driven 2015 2016 2017 2018 2019 2020 2021 2022 3,240 1,211 3,208 3,253 2,169 2,224 1,162 1,074 Using a 4-year moving average, what would be the forecast for the miles to be driven in 2023? (Display your answer to the nearest whole number.) Number Using a 4-year weighted moving average (with last year's weight as 0.5, two years previous as 0.2; three years previous as 0.2, and four years previous as 0.1) what is the forecast for 2023? (Display your answer to the nearest whole number.) Numberarrow_forward
- Question 3: Jane is trying to forecast demand for her store, using moving average with n=2, Fill in the missing cells with correct values and find average error for first quarter and second quarter of year 2000 E Enroll- Year Quarter ment Forecast Error Abs Error 1997 313 3. 2 285 4 3 312 5. 4 339 6. 1998 1 359 7 320 356 385 6. 10 1999 396 367 11 397 12 423 13 14 2000 1 15 2000 3412M4arrow_forwardA method of estimating future demand usedfor decision making in order to set reasonable targets and control orlimit uncertainties or risks.arrow_forwardForecasted Statements and Ratios Upton Computers makes bulk purchases of small computers, stocks them in conveniently located warehouses, ships them to its chain of retail stores, and has a staff to advise customers and help them set up their new computers. Upton's balance sheet as of December 31, 2019, is shown here (millions of dollars): Cash $ 3.5 Accounts payable $ 9.0 Receivables 26.0 Notes payable 18.0 Inventories 58.0 Line of credit 0 Total current assets $ 87.5 Accruals 8.5 Net fixed assets 35.0 Total current liabilities $ 35.5 Mortgage loan 6.0 Common stock 15.0 Retained earnings 66.0 Total assets $122.5 Total liabilities and equity $122.5 Sales for 2019 were $275 million and net income for the year was $8.25 million, so the firm's profit margin was 3.0%. Upton paid dividends of $3.3 million to common stockholders, so its payout ratio was 40%. Its tax rate was 25%, and it operated at full capacity. Assume that all assets/sales ratios,…arrow_forward
- Scenario for question Thabo Auto Parts is a very small scrapyard in Bloemfontein that started operating in February 2021 and they sell parts for BMW cars. Currently, they serve the customers in Bloemfontein. Even though Thabo Auto Parts has a limited marketing budget and few resources (e.g., employees), they are considering engaging in digital marketing. They already have a Facebook account that is used once a week to only post items on promotion to their 50 followers. Thabo Auto Parts manager states that they have seen too little benefits from marketing on Facebook, and they are, therefore, reluctant to invest further into digital marketing. The manager of Thabo Auto Parts has approached you for advice Explain to the Thabo Auto Parts manager what impact will digital marketing have on their business and suggest the three most appropriate digital marketing strategies (other than Facebook) for Thabo Auto Parts? You also need to explain why the three digital marketing strategies you…arrow_forwardScenario for question Thabo Auto Parts is a very small scrapyard in Bloemfontein that started operating in February 2021 and they sell parts for BMW cars. Currently, they serve the customers in Bloemfontein. Even though Thabo Auto Parts has a limited marketing budget and few resources (e.g., employees), they are considering engaging in digital marketing. They already have a Facebook account that is used once a week to only post items on promotion to their 50 followers. Thabo Auto Parts manager states that they have seen too little benefits from marketing on Facebook, and they are, therefore, reluctant to invest further into digital marketing. The manager of Thabo Auto Parts has approached you for advice Identify the mistakes, if any, that Thabo Auto Parts did when using Facebook for marketing, discuss what they should consider for optimal benefits of Facebook marketingarrow_forwardScenario for question Thabo Auto Parts is a very small scrapyard in Bloemfontein that started operating in February 2021 and they sell parts for BMW cars. Currently, they serve the customers in Bloemfontein. Even though Thabo Auto Parts has a limited marketing budget and few resources (e.g., employees), they are considering engaging in digital marketing. They already have a Facebook account that is used once a week to only post items on promotion to their 50 followers. Thabo Auto Parts manager states that they have seen too little benefits from marketing on Facebook, and they are, therefore, reluctant to invest further into digital marketing. The manager of Thabo Auto Parts has approached you for advice Discuss which copyrights, patent or trade secret, if any, will result from this work.arrow_forward
- Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,