Historical returns. Calculate the arithmetic average return of U.S. Treasury bills, long-term government bonds, and large-company stocks for 1988 to 1997. Which had the highest return? Which had the...

Extracted text: Historical returns. Calculate the arithmetic average return of U.S. Treasury bills, long-term government bonds, and large-company stocks for 1988 to 1997. Which had the highest return? Which had the lowest return? On the left side, click on the Spreadsheet Leaming Aid to see Table 8.1-Year-by-Year Returns, 1950-1999. What is the average return of U.S. Treasury bills for 1988 to 1997? |% (Round to two decimal places.)