Question 18 (1 point) An efficient market does not require that: 1) Stock prices incorporate all information. 2) All known information be reflected in prices. 3) Price adjustments occur very quickly. 4) Each price adjustment be perfect. Question 19 (1 point) Weak form market efficiency 1) Implies that the expected return on any security is zero. 2) Incorporates semi-strong form efficiency. 3) Involves price and volume information. 4) is compatible with technical analysis