題組內容

5. (20%) True, false, or uncertain? Evaluate the following statements with brief explanations.

(d) (5%) In the context of a controlled experiment, consider the simple linear regression model 61dbc992663cd.jpg, where Yi is the outcome, Xi is the randomly assigned treatment level, and u: contains all the additional determinants of the outcome. Then the OLS estimator of B will be inconsistent since there are omitted variables present.