1. Assume that long-term corporate bonds had an average return of 6.3 percent and a standard deviation of 8.3 percent for a 30-year period. What range of returns would you expect to see on these bonds 68 percent of the time?

   		-2.0 percent to 14.6 percent
   		-2.0 percent to 22.9 percent
   		-10.3 percent to 14.6 percent
   		-10.3 percent to 17.4 percent
   		-10.3 percent to 22.9 percent