Analysis of annualized returns over a 10-year period showed that prepaid tuition plans had a mean return of 6.3 percent with a standard deviation of 2.7 percent, while the Standard & Poor’s 500 stock index had a mean return of 12.9 percent with a standard deviation of 15.8 percent. (a) Calculate the coefficients of variation of prepaid tuition plans and Standard & Poor’s stock index. (Round your answers to 2 decimal places.)

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