According to the endogenous growth model, the steady-state rates of growth of human capital, H, and output, Y are the same and equal b(1-u) - 1. The plot below provides data on the growth rates of H (measured as return to years of education) and Y (measured as real GDP per capita) for a sample of 139 countries. Average Growth Rates of H and Y Growth Rate of Y (%) 10 8 9 4 2 0 -2 T -4 0.5 1.5 2 2.5 25 Growth Rate of H (%) b. a. The evidence above appears to contradict the prediction of the endogenous growth model that H and Y grow at the same rate. What do you see in this plot that leads us to conclude that the evidence contradicts the model? On the other hand, does the evidence suggest that the two rates of growth, although not equal to one another, are nonetheless positively correlated? Why or why not? Two key assumptions of the endogenous growth model are (i) physical capital is absent and (ii) the share of time spent producing goods, u, is constant. How might these two aided assumptions make it more likely that the data would be inconsistent with the model? C. Despite the evidence shown above, why does the global evidence on convergence suggest that we ought to seriously consider the endogenous growth model as an alternative to the Solow growth model?