關於investment既問題

Suppos the market porfolio is eqully likely to increase by 30% or decrease by 10%

(a)Calvulate the beta of a firm that is equally likely to increase by 43% or decrease by 17%

(b)Suppose risk-rate interest rate is 4%, use beta calculated in part (a) to estimate its expected reture. Copute the Alpha of this stock.

我唔係好理解到問緊野,可唔可以幫下我,,,,,唔該