Everything else held constant, if disposable income increases by 200 and consumption expenditure increases by 150, the mpc is

In which of the following situations will market clearing price increase and the equilibrium quantity decrease?

A) an increase in demand with no change in supply B) an increase in supply with no change in demand C) a decrease in supply with no change in demand D) a decrease in demand with no change in supply

Suppose we are studying the effects of expanded income supplement for senior citizens on their health. We use the two-group, to-period differences-in-differences setup, with working-age citizens as our control group.Which of the following is a key assumption for the validity of this identification strategy?

A. In the absence of the intervention, theaverage health outcomes would be the same for both groups. B. Before the intervention, the average health outcomes were the same for both groups. C. After the intervention, the average health trends would be the same for both groups. D. In the absence of the intervention, theaverage health trends would be the same for both groups.