Question HelpA professor decides to run an experiment to measure the effect of time pressure on final exam scores. He gives each of the 400students in his course the same final exam, but some students have 90 minutes to complete the exam while others have 120minutes. Each student is randomly assigned one of the examination times based on the flip of a coin. Let Y, denote the number ofpoints scored on the exam by the " student (0 s Y, s100), let X, denote the amount of time that the student has to complete thethexam (X, = 90 or 120), and consider the regression model%3DY; = Bo+B,X; + Uj, E (u) = 0Which of the following are true about the unobservable u,? (Check all that apply)A. u represents factors other than time that influence the student's performance on the exam.B. Different students will have different values of u, because they have unobserved individual specific traits that affect examperformance.C. All students will necessarily have the same value of u, because they are part of the same population.D. u, will be zero for all students because time spent studying is likely the only factor that affects exam performance.The Least Squares AssumptionsY, =Po+B,X; + u, i = 1,..., n where1. The error term u, has conditional mean zero given X E(u|X) = 0,2. (X,Y), i= 1,., n, are independent and identically distributed (i.i.d.) draws from their joint distribution; and%3DClick to select your answer(s).WDOLLpe here to searchTOul performance.of u, because they have unobserved individual specific traits that affect exarC. All students will necessarily have the same value of u, because they are part of the same population.D.will be zero for all students because time spent studying is likely the only factor that affects exam performance.The Least Squares AssumptionsY, = Po +B,X; + U,„ i= 1,..., n where1. The error term u, has conditional mean zero given X; E (uX) = 0;2. (X,,Y), i= 1,..., n, are independent and identically distributed (i.i.d.) draws from their joint distribution; and%3D3. Large outliers are unlikely: X, and Y, have nonzero finite fourth moments.Assuming this year's class is a typical representation of the same class in other years, are OLS assumption (2) and (3) satisfied?O A. Only OLS assumption #3 is satisfied.O B. Neither OLS assumption #2 nor OLS assumption #3 is satisfied.OC. Both OLS assumption #2 and OLS assumption #3 are satisfied.O D. Only OLS assumption #2 is satisfied.-: ------Click to select your answer(s).Co searchDELL16

A professor decides to run an experiment to measure the effect of time pressure on final exam scores. He gives each of the 400 students in his course the same final exam, but some students have 90 minutes to complete the exam while others have 120 minutes. Each student is randomly assigned one of the examination times based on the flip of a coin. Let Y, denote the number of points scored on the exam by the " student (0 s Y, s100), let X, denote the amount of time that the student has to complete the exam (X, = 90 or 120), and consider the regression model Y; = Bo + B,X; + uj, E (u) =0 Which of the following are true about the unobservable u? (Check all that apply)

A professor decides to run an experiment to measure the effect of time pressure on final exam scores. He gives each of the 400 students in his course the same final exam, but some students have 90 minutes to complete the exam while others have 120 minutes. Each student is randomly assigned one of the examination times based on the flip of a coin. Let Y, denote the number of points scored on the exam by the " student (0 s Y, s100), let X, denote the amount of time that the student has to complete the exam (X, = 90 or 120), and consider the regression model Y; = Bo + B,X; + uj, E (u) =0 Which of the following are true about the unobservable u? (Check all that apply)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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