2. (15 points) Consider an equation to explain wages (wage) for the population of people in the 2015 workforce in Alaska in terms of years of schooling (educ): log( wage) = 0.28 + 0.096educ 1 = 364. R = 0.178 (a) Interpret the slope estimate clearly (b) Explain the meaning of R? = 0.178 clearly (c) Is this estimated equation used a cross-sectional data set or a time series data set? Explain clearly