Set up a spreadsheet that lets you change the parameters of the Keynesian model experimentally. Make two copies of the model in your spreadsheet, one to use as a control (with the original parameter values), and the other to test changes in a single parameter. Graph the aggregate demand equations from the control and test models along with the equilibrium condition $$Z = Y$$ to visualize the Keynesian cross.

Use the spreadsheet to verify your answers to the previous problems, and to conduct comparative equilibrium experiments of your own design.

use of the following data for a hypothetical economy:

All variables are in units of constant dollars per year, which we will represent by the $ symbol. Unless the problem states otherwise, always go back to these original data.

C 140+.6(Y-T) I = 200 G = 150 T = 150