Consider this argument: "stock today closed slightly lower on moderate trading. this was after an announcement last night that middle eastern oil producers were planning to increase the price of a barrel of oil by 1.5% over the next 18 months. the slide in the market was probably reacting to that announcement. don't you agree? " that argument is an example of:.

The returns on the common stock of maynard cosmetic specialties are quite cyclical. in a boom economy, the stock is expected to return 22 percent in comparison to 9 percent in a normal economy and a negative 14 percent in a recessionary period. the probability of a recession is 35 percent while the probability of a boom is 10 percent. what is the standard deviation of the returns on this stock?