Finance homework question

The countries of Stabilato and Variato have the following average returns and standard deviations for their stock, bond, and short-term government securities.  What range of returns should you expect to earn 95% of the time for each asset class if you invested in Stabilato's securities? From investing in Variato's securities?
Stabilato stocks: Average return 8%, standard deviation 3%. Stabilato bonds: Average return 5% standard deviation 2%. Stabilato short term government debt: Average return 3% Standard deviation 1%. Variato stocks: Average return 15% standard deviation 13% Variato bonds: Average return 10% standard deviation 8%. Variato short term government debt: Average return 6% standard deviation 3%.