The presence of positive and negative externalities associated with many economic activities generates __________ in our economy

Given the amount of money and effort that you have spent on your education, you wonder if it was (is) all worth it

You therefore collect data from the Current Population Survey (CPS) and estimate a linear relationship between earnings and the years of education of individuals. What would be the effect on your regression slope and intercept if you measured earnings in thousands of dollars rather than in dollars? Would the regression R2 be affected? Should statistical inference be dependent on the scale of variables? Discuss. What will be an ideal response?

If Sarah decides not to hit Tom, what would Tom's best response be

a. Tell b. Not tell c. Run d. Hide