Annual Returns on 25thCentury Technologies common stock are normally distributed with a mean of 40% and a standard deviation of 50%.

1. What is the probability of on average doubling your investment each year, if you invest for 4 years?

1. If you invest for 10 years, 95% of the times your average annual return would be above what value?

1. If you invest for 16 years, 5% of the times your average annual return would be outside what range?