Suppose the risk-free interest rate is 5%, and the stock market will return either 40% or 20% each year, with each outcome equally likely. Compare the following two investment strategies: (1) invest for one year in the risk-free investment, and one year in the market, or (2) invest for both years in the market.

compute the standard deviation for each case B (1) and B (2) and depict all steps in the calculation, that I described.