Let wages denote hourly wages, educ years of education, and exper years of experience, and suppose log(wages) = Bi + Bzeduc + B3exper + e where E[e|educ, exper] = 0. Let b, b2, and bz be our estimates for B1. B2, and ß3 and r23 denote the sample correlation between {educ, }" and {exper,}". Which of the following statements is true? %3D O a. The variance of bz does not depend on r23. O b. The variance of b2 is increasing in E",(educ, - educ,)² (all else equal). C. The variance of ba is at least as large as g2/" (educ educ 12 - Varlale
Let wages denote hourly wages, educ years of education, and exper years of experience, and suppose log(wages) = Bi + Bzeduc + B3exper + e where E[e|educ, exper] = 0. Let b, b2, and bz be our estimates for B1. B2, and ß3 and r23 denote the sample correlation between {educ, }" and {exper,}". Which of the following statements is true? %3D O a. The variance of bz does not depend on r23. O b. The variance of b2 is increasing in E",(educ, - educ,)² (all else equal). C. The variance of ba is at least as large as g2/" (educ educ 12 - Varlale
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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