The average return for large-cap domestic stock funds over three years was14.6%. Assume the three-year returns were normally distributed across funds with a standard deviation of 4.5%.

a.What is the probability an individual large-cap domestic stock fund had a three-year return of at least20%(to 4 decimals)?

b.What is the probability an individual large-cap domestic stock fund had a three-year return of10%or less (to 4 decimals)?

c.How big does the return have to be to put a domestic stock fund in the top10%for the three-year period (to 2 decimals)?