{"kind":"user","text":"Wooldridge, Introductory Econometrics (7th edition), Example 15.1, equation (15.17), using Mroz's (1987) data on married women: among the women who worked in 1975 (those with an observed wage), estimate by instrumental variables the return to education in a simple regression of the log hourly wage on years of schooling and an intercept, using the father's years of schooling as the instrument. Report the coefficient on years of schooling."}