You may need to use the appropriate appendix table to answer this question. The average return for large-cap domestic stock funds over three years was 14.4%. Assume the three-year returns were normally distributed across funds with a standard deviation of (a) What is the probability an individual large-cap domestic stock fund had a three-year return of at least 23%? (Round your answer to four decimal places.) (b) What is the probability an individual large-cap domestic stock fund had a three-year return of 10% or less? (Round your answer to four decimal places.) (c) How big does the return have to be to put a domestic stock fund in the top 25% for the three-year period? (Round your answer to two decimal places.) %