Expected return and standard deviation. Use the following information to answer the questions. Probability of State State of Economy Boom Growth Stagnant Recession 0.28 0.35 0.21 0.16 Return on Asset R in State 0.035 0.035 0.035 0.035 Return on Asset S in State 0.290 0.130 0.180 -0.040 Return on Asset T in State 0.490 0.320 0.030 -0.150 a. What is the expected return of a portfolio with equal investment in all three assets? b. What is the portfolio's variance and standard deviation? a. What is the expected return of a portfolio with equal investment in all three assets? (Round to four decimal places.) b. What is the portfolio's variance? (Round to four decimal places.) What is the portfolio's standard? (Round to four decimal places.)