help please

Mr. John Backster, a retired executive, desires to invest a portion of his assets in rental property He has narrowed his choices to two apartment complexes, Windy Acres and Hillcrest Apartments. The anticipated annual cash inflows from each are as follows 0. Find the expected value of the cash flow for each apartment complex. (Enter the onswers in thousands.) b. What is the coefficient of variation for each apartment complex? (Do not round intermediate colculations, Round the final onswers to 4 decimol places.) b. What is the coefficient of variation for each apartment complex? (Do not round intermediate calculotions. Round the final onswers to 4 decimal places.) c. Which apartment complex has more risk? Windy Acres Hillcrest Apartments