Over the past five years, a stock returned 8.4 percent, -8.7 percent -3.2 percent, 1.5 percent, and 11.5 percent, respectively. What is the variance of these returns? 0.006824 0.043375 0.041302 0.165321 Midwest Fastener Supply stock is expected to return 16 percent in a booming economy, 12 percent in a normal economy, and -3 percent in a recession. The probabilities of an economic boom, normal state, or recession are 12 percent, 80 percent, and 8 percent, respectively. What is the expected rate of return on this stock? O 10.95 percent 10.67 percent 11.91 percent O 11.70 percent 11.28 percent