An all equity firm is considering the following projects

Project beta IRR

W .60 8.8%

X .85 9.5

Y 1.15 11.9

Z 1.45 15.0

The T-Bill rate is 4% and expected return on market is 11%

a-which projects have a higher expected return than the firms 11 percent cost of capital?

b-which projects should be accepted?

c-which projects would be incorrectly accepted or rejected if the firms overall cost of capital were used as a hurdle rate?

need steps to solve please and thank you