We have a pooled cross section of data with data from 2009 and 1999 on women’s wages and their years of education. We consider the model: wage = β0 + β1Year2009 + β2educ + β3Year2009 × educ + u where wage is the hourly wage and educ is the years of education. Year2009 is a dummy variable equal to 1 in the year 2009 and 0 otherwise. Which of the following measures the change in the effect of education on the wage between 1999 and 2009?  a) β0 b) β1 + β2 + β3 c) none of these answers d) β1 + β3 e) β3

Managerial Economics: Applications, Strategies and Tactics (MindTap Course List)
14th Edition
ISBN:9781305506381
Author:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Publisher:James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Chapter4A: Problems In Applying The Linear Regression Model
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Problem 1E
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We have a pooled cross section of data with data from 2009 and 1999 on women’s wages and their years of education. We consider the model:

wage = β0 + β1Year2009 + β2educ + β3Year2009 × educ + u

where wage is the hourly wage and educ is the years of education. Year2009 is a dummy variable equal to 1 in the year 2009 and 0 otherwise.

Which of the following measures the change in the effect of education on the wage between 1999 and 2009? 

a) β0

b) β1 + β2 + β3

c) none of these answers

d) β1 + β3

e) β3

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