Over the past 4 years, large-company stocks and U.S. Treasury bills have produced the returns stated below. During this period, inflation averaged 3.4 percent. Given this information, 1. What are the average rates of return on large-company stocks and Treasury bills? 2. What are the standard deviation for large-company stocks and Treasury bills? Percent return on large company stocks Year 1 Year 2 Year 3 Year 4 9 13 21 3 Percent return on U.S. Treasury Bills Year 1 Year 2 Year 3 Year 4 3 2 4 4.