A certain soda company, "Pop's Soda", claims that 90% of soda drinkers prefer their soda over the other major brands of soda. If this is true, what is the probability that, in a blind taste test involving 20 randomly selected soda drinkers, exactly 90% of those sampled will say they prefer "Pop's Soda" over the other brands of soda tasted? Round to four decimal places if necessary