Questions from Spreadsheet Modeling


Q: A cost estimator for a construction company has collected the data found

A cost estimator for a construction company has collected the data found in the file Construction.xlsx describing the total cost (Y) of 97 different projects and the following five independent variabl...

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Q: The personnel director for a small manufacturing company has collected the data

The personnel director for a small manufacturing company has collected the data found in the file Manufacturing.xlsx describing the salary (Y) earned by each machinist in the factory along with the av...

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Q: Caveat Emptor, Inc. is a home inspection service that provides

Caveat Emptor, Inc. is a home inspection service that provides prospective homebuyers with a thorough assessment of the major systems in a house prior to the execution of the purchase contract. Prospe...

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Q: Throughout our discussion of regression analysis, we used the Regression command

Throughout our discussion of regression analysis, we used the Regression command to obtain the parameter estimates that minimize the sum of squared estimation errors. Suppose that we want to obtain pa...

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Q: Throughout our discussion of regression analysis, we used the Regression command

Throughout our discussion of regression analysis, we used the Regression command to obtain the parameter estimates that minimize the sum of squared estimation errors. Suppose that we want to obtain pa...

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Q: Suppose the variable X is being used to predict Y using a

Suppose the variable X is being used to predict Y using a linear regression function of the form Ŷi 5 b0 1 b1Xi. If there is no linear relation between X and Y, what is the optimal regression function...

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Q: Least squares regression finds the estimated values for the parameters in a

Least squares regression finds the estimated values for the parameters in a regression model to minimize ESS 5 o n i 5 1 (Yi 2 Ŷi ) 2 . Why is it necessary to square the estimation errors? What proble...

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Q: Members of the Roanoke Health and Fitness Club pay an annual membership

Members of the Roanoke Health and Fitness Club pay an annual membership fee of $250 plus $3 each time they use the facility. Let X denote the number of times a person visits the club during the year....

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Q: An accounting firm that specializes in auditing mining companies collected the data

An accounting firm that specializes in auditing mining companies collected the data found in the file MiningAudit.xlsx that accompanies this book describing the long-term assets and long-term debt of...

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Q: Use Solver to create a Sensitivity Report for question 19 at the

Use Solver to create a Sensitivity Report for question 19 at the end of Chapter 3 and answer the following questions: a. Is the solution degenerate? b. Would the solution change if the price of raisin...

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