A stock has an average return of 19.2 percent and a standard deviation of 10.7 percent. In any one given year, you have a 95 percent chance that you will not lose more than _____ percent nor earn more than ____ percent if you invest in this security. -2.2; 38.2 -2.2; 40.6 -13.9; 50.3 -13.9; 28.9 -13.9; 39.6