Use 36 months of data on the industry portfolio of Agriculture (Agriculture) and other data of the market index excess returns (Rm Rf) and the risk-free return (Rf) contained in the Excel file to perform the following tasks. Required: a) Describe the steps taken to estimate alpha and beta of the industry portfolio using the CAPM. [3 marks] b) Use a table to summarize your estimation results of annual expected return, annual standard deviation, alpha, and beta of the industry portfolio. [2 marks]