Assume these are the stock market and Treasury bill returns for a 5-year period: Required: a. What was the risk premium on common stock in each year? b. What was the average risk premium? c. What was the standard deviation of the risk premium? (Ignore that the estimation is from a sample of data.) Answer is not complete. Complete this question by entering your answers in the tabs below. What was the risk premium on common stock in each year? Note: Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places. Negative values should be entered with a negative sign. Assume these are the stock market and Treasury bill returns for a 5-year period: Required: a. What was the risk premium on common stock in each year? b. What was the average risk premium? c. What was the standard deviation of the risk premium? (Ignore that the estimation is from a sample of data.) Answer is not complete. Complete this question by entering your answers in the tabs below. What was the average risk premium? Note: Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Johnny's Lunches is considering purchasing a new, energy-efficient grill. The grill will cost $50,000 and will be depreciated straightline over 3 years. It will be sold for scrap metal after 5 years for $12,500. The grill will have no effect on revenues but will save Johnny's $25,000 in energy expenses. The tax rate is 30%. Required: a. What are the operating cash flows in each year? b. What are the total cash flows in each year? c. Assuming the discount rate is 11%, calculate the net present value (NPV) of the cash flow stream. Should the grill be purchased? Complete this question by entering your answers in the tabs below. Assuming the discount rate is 11%, calculate the net present value (NPV) of the cash flow stream. Should the grill be purchased? Note: Do not round intermediate calculations. Round your answer to 2 decimal places