In mid-2009, Ralston Purina had AA-rated, six-year bonds outstanding with a yield to maturity of 3 51% At the time, sirnilar maturity Treasures had a yield of 3% a. I Ralston Purina's bonds were risk-free, what is your estimate of the expected return for these bonds? b. If you believe Ralston Purina's bonds have 1.2% chance of default per year and that expected loss rato in the event of default is 37%, what is your estimates of the expected return for these bonds? a. I Ralston Purina's bonds were risk-free what is your estimate of the expected return for these bonds? The estimate of the expected return for these bonds is N% (Round to two decimal places)