Question 5We have a dataset of different countries and we want to generate an indicator that indicateswhether the country is in Africa or not. We also have a variable named "continent" that is acategorical string variable indicating the continent of the country. What is the correct syntax togenerate an indicator variable named Africa that is equal to 1 if the country is in Africa and 0otherwise:gen Africa = (continent=="Africa")gen Africa = (continent==Africa)gen Africa= (continent = "Africa")gen Africa = 1 if continent== "Africa"

Explanation : The correct syntax to generate an indicator variable named "Africa" that is equal to 1…

Answered: We have a dataset of different…

Practical Management Science

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...

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Question 1 Double Exponential Smoothing should be applied to time series with ____________________. Group of answer choices a. no trend and no seasonality. b. trend but no seasonality. c. seasonality but no trend. d. both trend and seasonality. Question 2 An analyst fits a Holt’s Double exponential smoothing model in StatTools to a time series data on sales with the smoothing parameters to be optimized by the software. In the output she notes that the optimized smoothing parameter for trend to be 0.0000. What does this imply? Group of answer choices a. There is no trend in the data. b. There is both trend and seasonality in the data. c. There could be trend in the data, but it is not smoothed over time by the model. d. This output does not make any sense!
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Question 2 A particular road is used by N drivers each day. Each driver obtains a benefit v from the journey and incurs a cost c(N ) that increases with the number of drivers on the road due to congestion. Suppose that the cost incurred is given by c(N) = a+bN, for some positive numbers a, b. If the agent decides not to use the road, they receive 0. You may assume throughout that the number of drivers N can be any real number (rather than an integer). Each driver uses the road at most once. the number of drivers that join the road is Ne = (v−a)/b (iv) Suppose that the government charges a toll t (a congestion charge) for each journey. Find the optimum toll. Interpret your answer in terms of the externality that each driver imposes on others.
Question Primer Inc. offers plumbing and air conditioning services to customers in Kumasi, Ghana. The company’s product strategy is to solve the customer’s problem irrespective of what it takes, at the time the customer needs it solved. The company provides same day service for customers, and theaim is to make the customer happy before leaving.The services of the company are available 24 hours a day, 7 days a week for customers. There is no extra charge for requests made on holidays, odd hours of the day, or in festive seasons. The company aims to be available at the call of customers without charging a pesewa extra, even at times when rival firms won’t get out of bed. The company fixes the price of the service before it begins, and customers can be assured of no extra charges. Irrespective of the customer’s location in the city, Primer Inc. does not charge additional fees for transportation. For all services, the company provides a one year guarantee on all parts and labour used,…
Question 3 A research collaboration can be enhanced by: Limiting the communication between researchers and industry partners. Avoiding the issue of which journal to target since research team members might disagree. Discussing intellectual property issues while the collaboration is forming. Waiting to discuss authorship issues until after data collection. Question 4 In any collaboration, data ownership is typically determined by: The research team with access to the best lawyers. The individual who does the most work on the project. The type and source of funds used to support the project. The relevant department chairs.
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Question 4 (a) With reference to your department or one in a company or organization that you are familiar with that is involved in generating forecasts of air cargo traffic, propose the purposes for which the forecasts can be employed. In the process of generating air cargo traffic forecasts, appraise the forces that will promote air freight growth and the constraints the air cargo market are likely to face.

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