22. Your analysts have estimated the following risk and returns for IBM and TI for the next year. Provide your answers to the three questions that follow in the uploaded document (Label your answers a, b, and c and show your work in the uploaded document to receive full credit) Estimated Standard Asset Return Deviation IBM 0.28 0.36 TI 0.22 0.25 Risk-free asset 0.06 0.00 The covariance between TI and IBM is 0.225 a. Calculate the standard deviation of a portfolio that is 75% invested in TI and 25% invested in IBM. b. Calculate the expected return of a portfolio that is 75% invested in TI and 25% invested in IBM c. Draw the two-stock efficient frontier for TI and IBM (including completely labelling the graph). Include in your graph the approximate locations for TI and IBM estimated returns and standard deviations, and (approximately) where the 75%/25% portfolio would like on the graph, thus demonstrating the impact of diversification on a 2- stock portfolio