the average return for large-cap domestic stock funds over three years was . 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 (to 4 decimals)? b. what is the probability an individual large-cap domestic stock fund had a three-year return of or less (to 4 decimals)? c. how big does the return have to be to put a domestic stock fund in the top for the three-year period (to 2 decimals)?