The annual percentage returns on common stocks over a 7-year period were as follows: 4.0% 14.3% 19.0%

Question:

The annual percentage returns on common over a 7-year period were as follows:
4.0% 14.3% 19.0% -14.7% -26.5% 37.2% 23.8%
Over the same period the annual percentage returns on U.S. Treasury Bills were as follows:
6.5% 4.4% 3.8% 6.9% 8.0% 5.8% 5.1%
a. Compare the means of these two population distributions.
b. Compare the standard deviations of these two population distributions. Stocks
Stocks or shares are generally equity instruments that provide the largest source of raising funds in any public or private listed company's. The instruments are issued on a stock exchange from where a large number of general public who are willing...