Sandra recentlt invested in real estate with the intention of selling the property one year from today. She has modeled the returns on that investment based on three economic scenerios. She believs that if the economy stays healthy, then her investment will generate a 30 percent return. However, if the economy softens, as predicted, the return will be 10 percent, while the return will be -25 percent if the economy slips into a recession. Assume the probabilities of the healthy, soft, and recessionary states are 0.4, 0.3, and 0.3, respectively. Calculate the coefficient of variation for investment.