reasonable estimate of the risk-free rate

Suppose CAPM works, and you know that the expected returns on Walmart and Amazon are estimated to be 12% and 10%, respectively. You have just calculated extremely reliable estimates of the betas of Walmart and Amazon to be 1.30 and 0.90, respectively. Given this data, what is a reasonable estimate of the risk-free rate (the return on a long-term government bond)? (Enter the answer with no more nor less than two decimal places, and leave off the % sign. For example, if your answer is 13.97% you should enter it as 13.97 NOT 0.14 nor 14)Suppose CAPM works, and you know that the expected returns on Walmart and Amazon are estimated to be 12% and 10%, respectively. You have just calculated extremely reliable estimates of the betas of Walmart and Amazon to be 1.30 and 0.90, respectively. Given this data, what is a reasonable estimate of the risk-free rate (the return on a long-term government bond)? (Enter the answer with no more nor less than two decimal places, and leave off the % sign. For example, if your answer is 13.97% you should enter it as 13.97 NOT 0.14 nor 14)Suppose CAPM works, and you know that the expected returns on Walmart and Amazon are estimated to be 12% and 10%, respectively. You have just calculated extremely reliable estimates of the betas of Walmart and Amazon to be 1.30 and 0.90, respectively. Given this data, what is a reasonable estimate of the risk-free rate (the return on a long-term government bond)? (Enter the answer with no more nor less than two decimal places, and leave off the % sign. For example, if your answer is 13.97% you should enter it as 13.97 NOT 0.14 nor 14)