38. 39. 40. Which of the following refers to decision making under risk? A) EVPI. B) Minimax regret. C) Maximin. D) Maximax. E) Laplace. Which of the following statement is not true about moving averages and exponential smoothing? A) Both tend to lag changes in a time series. B) Both smooth data. C) Both involve relatively fairly simple calculations. D) Both can be used to obtain seasonal index numbers. E) Both are relatively easy to interpret. P(A U B) is the probability of which of the following events will occur? A) A B) B C) A and B D) A or B or both E) None of the above