5. In a financial crisis or other flights to safety, why do yields on U.S. Treasury securities decline and those on private securities rise? 6. When there is turmoil in Europe, why does the U.S. dollar typically appreciate relative to the euro and sovereign bond prices typically rise in the United States an fall in Europe? 7. How do credit rating agencies address the problem of asymmetric information? What is the relationship between the different ratings and the probability of defaul Is there a conflict of interest regarding how the credit rating agencies are