How would you shift the aggregative demand curve to represent each of the following changes in economic conditions?
I. Consumers expect an economic upturn.
II. A new government is elected and business and business managers become more uncertain about future business prospects under the new government.
III. In order to reduce the budget deficit, the federal government decreases spending on a range of government payments to families, individuals and businesses.
IV. Australia's exchange rate appreciates (increase in value relative to other currencies) significantly for an extended period.