Suppose that you have a bag of marbles, some of which are red, some of which are blue, and some of which are green. If you take marbles out one at a time, look at them, and then put them back before drawing the next one, we can model this as a Binomial Distribution. Suppose you draw 8 marbles out of the bag, what is the Standard Deviation of red marbles drawn if the proportion of red marbles is 0.32? Round your answer to two decimal places.