Problem 15 (a) True or false: according to the efcient markets hypothesis, you cannot predict future price movements, and therefore all assets have the same expected return? (b) True or false: if the efcient markets hypothesis is true, the CAPM must be true? (0) If we can all agree that stocks who have changed CEOs in the past year are overpriced and have poor subsequent returns, which form(s), if any, of the eicient markets hypothesis does this violate