32. Suppose you want to construct a trading strategy. You buy a stock whose price is a martingale and sell when the net return reaches the high barrier or low barrier . whichever comes first. If the probability that you make profits out of this trading strategy as 80%, what is | |? Note || is the absolute value of . Thus, the answer is nonnegative. Express your answer as a decimal. For example, type 3.52 or 0.43