In the december, 1969, american economic review (pp. 886-896), nathanial leff reports the following least squares regression results for a cross section study of the effect of age composition on savings in 74 countries in 1964: log s/y = 7.3439 + 0.1596 log y/n + 0.0254 log g - 1.3520 log d1 - 0.3990 log d2 (r2 = 0.57) log s/n = 8.7851 + 1.1486 log y/n + 0.0265 log g - 1.3438 log d1 - 0.3966 log d2 (r2 = 0.96) where s/y = domestic savings ratio, s/n = per capita savings, y/n = per capita income, d1 = percentage of the population under 15, d2 = percentage of the population over 64, and g = growth rate of per capita income. are these results correct? explain