Security f has an expected return of 11.7 percent and a standard deviation of 44.7 percent per year. security g has an expected return of 16.7 percent and a standard deviation of 63.7 percent per year. a. what is the expected return on a portfolio composed of 23 percent of security f and 77 percent of security g? (do not round intermediate calculations. enter your answer as a percent rounded to 2 decimal places, e. g., 32.16.) expected return 15.55 15.55 correct % b. if the correlation between the returns of security f and security g is .18, what is the standard deviation of the portfolio described in part (a)? (do not round intermediate calculations. enter your answer as a percent rounded to 2 decimal places, e. g., 32.16.)

John and daphne are saving for their daughter ellen's college education. ellen just turned 10 at (t = 0), and she will be entering college 8 years from now (at t = 8). college tuition and expenses at state u. are currently $14,500 a year, but they are expected to increase at a rate of 3.5% a year. ellen should graduate in 4 years--if she takes longer or wants to go to graduate school, she will be on her own. tuition and other costs will be due at the beginning of each school year (at t = 8, 9, 10, and 11).so far, john and daphne have accumulated $15,000 in their college savings account (at t = 0). their long-run financial plan is to add an additional $5,000 in each of the next 4 years (at t = 1, 2, 3, and 4). then they plan to make 3 equal annual contributions in each of the following years, t = 5, 6, and 7. they expect their investment account to earn 9%. how large must the annual payments at t = 5, 6, and 7 be to cover ellen's anticipated college costs? a. $1,965.21b. $2,068.64c. $2,177.51d. $2,292.12e. $2,412.76