g Assume that a hypothetical economy with an MPC of 0.8 is experiencing severe recession. Instructions: In part a, round your answers to 2 decimal places. Enter your answers as positive numbers. In part b, enter your answers as whole numbers. a. By how much would government spending have to rise to shift the aggregate demand curve rightward by $25 billion

Consider a treasury bill with a rate of return of 5% and the following risky securities: security a: e(r) = .15; variance = .0400 security b: e(r) = .10; variance = .0225 security c: e(r) = .12; variance = .1000 security d: e(r) = .13; variance = .0625 the investor must develop a complete portfolio by combining the risk-free asset with one of the securities mentioned above. the security the investor should choose as part of her complete portfolio to achieve the best cal would be a. security a b. security b c. security c d. security d