The average return for large-cap domestic stock funds over certain three years was 7.2%. Assume the three-year returns were normally distributed across funds with a standard deviation of 2.2%. What is...

The average return for large-cap domestic stock funds over certain three years was 7.2%. Assume the three-year returns were normally distributed across funds with a standard deviation of 2.2%. What is the probability an individual large-cap domestic stock fund had a three-year return of 5% or less?