Dan Conway invested his life savings in cryptocurrencies in 2016. Since then, that investment has earned an average return of 10.55%. What is the range of Dan Conways returns with a 68% probability, if his investment exhibits a standard deviation of 19.35%? Multiple Choice 47.50% to 68.60% 8.80% to 29.90% 8.80% to 12.30% 28.15% to 49.25% 18.48% to 39.58%