Many financial economists believe that the random walk model is a good description of the logarithm of stock prices. it implies that the percentage changes in stock prices are unforecastable. a financial analyst claims to have a new model that makes better predictions than the random walk model. explain how you would examine the analyst's claim that his model is superior.

Consider the labor market for computer programmers. during the late 1990s, the value of the marginal product of all computer programmers increased dramatically. holding all else equal, what effect did this process have on the labor market for computer programmers? the equilibrium wagea. increased, and the equilibrium quantity of labor decreased. b. decreased, and the equilibrium quantity of labor increased. c. increased, and the equilibrium quantity of labor increased. d. decreased, and the equilibrium quantity of labor decreased.