A professor wants to investigate the relationship between the grades students obtain in their midterm exam (X) and the grades they obtain (Y) in the final exam The professor collects data from 60 randomly chosen students. The estimated OLS regression is: 9=45+0.85X where Y, denotes the predicted value of the grades obtained in the final exam by the " individual and X, denotes the grades obtained in the midterm exam From the sample data he makes the following calculations 60 (x -X)* -230 48 =1 60 = 410.25, %3D1 where u, is the square of the residual for the " observation. He wants to test whether the grades obtained in the midterm exam have any effect on the grades obtained in the final exam or not Which of the following are the null and the alternative hypotheses of the test the professor wishes to conduct? OA. Ho B1=0 vs. H B, #0. OB. Ho B=0 85 vs. H, B, 0.85 OC. H. B. #0 vs. H B = 0 Click to select your answer(s).

A professor wants to investigate the relationship between the grades students obtain in their midterm exam (X) and the grades they obtain (Y) in the final exam The professor collects data from 60 randomly chosen students. The estimated OLS regression is: 9=45+0.85X where Y, denotes the predicted value of the grades obtained in the final exam by the " individual and X, denotes the grades obtained in the midterm exam From the sample data he makes the following calculations 60 (x -X)* -230 48 =1 60 = 410.25, %3D1 where u, is the square of the residual for the " observation. He wants to test whether the grades obtained in the midterm exam have any effect on the grades obtained in the final exam or not Which of the following are the null and the alternative hypotheses of the test the professor wishes to conduct? OA. Ho B1=0 vs. H B, #0. OB. Ho B=0 85 vs. H, B, 0.85 OC. H. B. #0 vs. H B = 0 Click to select your answer(s).

Essentials of Business Analytics (MindTap Course List)

2nd Edition

ISBN:9781305627734

Author:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Publisher:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Chapter7: Linear Regression

Section: Chapter Questions

Problem 4P: A sociologist was hired by a large city hospital to investigate the relationship between the number...

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