3. permanent Income Hypothesis

a) suppose that beta=.9 and R= 2222 (that is ~22%). For an individual who acts according to the PIH, will their consumption next period be higher than current consumption or lower? b) What is the main crucial difference between the Keynesian Consumption function and the consumption function derived from the PIH (or Lifetime Income Hypothesis)? c) If Present Value of future income stream is 500,000 and a person has a beta of.8, how much will their consumption go up today if only today's income increases by 1000? How much will their consumption increase (approximately) if their income goes up by 1000 in all periods?