Suppose That It Is Believed That Investor Returns on Equity

Multiple Choice

Suppose that it is believed that investor returns on equity investments at a particular brokerage house are normally distributed with a mean of 9 percent and a standard deviation equal to 3.2 percent.What percent of investors at this brokerage hour earned at least 5 percent?

A) 89.44 percent
B) 10.56 percent
C) 39.44 percent
D) 100 percent