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 -1.00.
| Asset | A | B |
|-------|-------|-------|
| Weight| 0.75 | 0.25 |
| Variance | 0.1444 | 0.0625 |
What is the standard deviation of the portfolio? Express your answer in decimal form. Round to two decimal places, i.e. O.YY.