The data in represent the 3-year annualized return, 5-year annualized return, 10-year annualized return, and expense ratio (in %) for the 10 mutual funds rated best by the U. S. News & World Report for intermediate municipal bond, short- term bond, and intermediate-term bond categories. (Data extracted from K. Shinkle, The Best Funds for the Long Term, U. S. News & World Report, Summer 2010, pp. 52 56.) Analyze the data and determine whether any differences exist between intermediate municipal bond, short-term bond, and intermediate- term bond mutual funds. (Use the 0.05 level of significance.)