using the basic Keynesian model answewr the following parts carefully using the relevant diagrams. what happens to the equilibrium level of GDP(Y) given the following: a) a reduction in government spending. b)a fall in the marginal propensity to save. c)a cut in the official rate of interest by the monetary policy committee. d) a decrease in export demand e) a reduction in the marginal tax rate f) a rise in autonomous consumption g) a fall in the marginal propensity to consume h) an increasy in the marginal propensity to import.