You own a portfolio consisting of 10 different stocks. In order to balance-out your portfolio, you have just finished allocating your money so that you have exactly $10,000 invested in each stock. The stocks you have chosen are risky each has a standard deviation of 70%. However, you have chosen them carefully so that the correlation between each pair of stocks is exactly 0.20. If each stock has an expected return of 14%, what is the standard deviation of your portfolio?