Suppose You Are Told That the Average Return on Investment

Suppose you are told that the average return on investment for a particular class of investments was 7.8% with a standard deviation of 2.3.Furthermore,the histogram of the distribution of returns is approximately bell-shaped.We would expect that 95 percent of all of these investments had a return between what two values?

A) 5) 5% and 10.1%
B) 0% and 15%
C) 3) 2% and 12.4%
D) 0) 9% and 14.7%