. Stock S is expected to return 12 percent in a boom and 6 percent in a normal economy. Stock T is expected to return 20 percent in a boom and 4 percent in a normal economy. There is a probability of 40 percent that the economy will boom; otherwise, it will be normal. What is the portfolio variance and standard deviation if 30 percent of the portfolio is invested in Stock S and 70 percent is invested in Stock T? Briefly discuss what this means to the stock.