Evaluate the following statements:

i. Investors will never invest in assets with lower expected return and higher risk than other assets. Similarly, investors will never invest in assets whose payoffs are dominated in all states by the payoffs of other assets.

ii. The Rational Expectations Hypothesis implies that forecasts are correlated with forecasting errors but forecast revisions are not.

iii. If markers are semi-strong efficient then the random-walk model will not be a good predictor of future asset prices.