please i need the answer immidiately

In mid-2009, Ralston Purina had AA rated, six-year bonds outstanding with a yield to maturity of 4.16%. At the time, simlar matunty Treasuries had a yield of 3% a. If Ralston Purina's bonds were risk-free, what is your stimate of the expected return for these bonds? b. If you believe Ralston Purina's bonds have 0.7% chance of default per year and that expected lost rate in tho event of detsuit is40%, what is your estimato of the expected return for these bonds? a. It 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 %. (Round to wo decimal places.)