 Solution

TODO: the numerical results, association direction and statistical evidence are unavailable. The required output includes the actual fitted model, estimates and uncertainty, test statistics, statistical degrees of freedom, p-values and an appropriate model-fit summary. An age-adjusted regression coefficient, if reported, would describe a conditional association under that model rather than the same estimand as an unadjusted correlation. Irrespective of its numerical outcome, this observational study does not by itself show that executive power changes real-life friendliness.