Assume that a decision-maker ranks lotteries according to the following mean-variance functional: U(E[W], 0') = E[W] x (10 0') . Assume that the initial level of wealth of the individual is zero. a) (4 marks) Show that this decision-maker prefers a lottery p which pays 10 with probability 100 percent to a lottery q that pays 10 with probability 50 percent and 20 with probability 50 percent. b) (4 marks) Give a denition of rst-order stochastic dominance and show that q dominates p in this sense. c) (2 marks) What might be the reason that the two approaches lead to different results (i.e., mean-variance approach is incompatible with the rst-order stochastic dominance approach)