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1 (RWJ Essentials 5ed Ch10 Problem 9,10,11, modified) [Calculating Returns, Variance, Real Returns, and Risk Premium] You've observed the following returns on XX Corporation's stock over the past five years: 16%,21%,4%,16%,9%. Suppose the average inflation rate over this period was 4.1% and the average T-bill rate over the period was 5.1%. What was the arithmetic average return on XX 's stock over this five period? What was the variance of XX 's returns over this period? The standard deviation? What was the risk premium on XX 's stock? 2 (RWJ Essentials 5ed Ch10 Problem 23, modified) [Calculating Investment Returns] You bought one of YY Corporation's 8% coupon bond (face value $1,000 ) one year ago for $1,028.50. These bonds make annual payments and mature six years from now. Suppose you decide to sell your bonds today, when the required return on the bonds is 7%. What is your total return for last year