your portfolio is invested 28 percent each in a and c, and 44 percent in b. what is the expected return of the portfolio? (do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) b-1. what is the variance of this portfolio? (do not round intermediate calculations and round your answer to 5 decimal places, e.g., .16161.) b-2. what is the standard deviation? (do not round intermedi
