Consider the data provided in the table below for a portfolio of assets A and B. The portfolio weights and variances are given in the table. The variances are expressed in decimal form. For example, if the standard deviation is 50%, then the variance is 0.52 = 0.25. The correlation of returns of the two assets is negative 0.24.

What is the standard deviation of the portfolio?

Asset A Portfolio Weights0.28 Variances Standard Deviation 0.27 Asset B 0.72 0.1849 0.43 0.0729