Problem 13-15 Abnormal returns Analysis of 60 monthly rates of return on United Futon common stock indicates a beta of 1.52 and an alpha of -0.27% per month. A month later, the market is up by 57%, and United Futon is up by 6.7%. What is Futon's abnormal rate of return? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Rate of return %