Assume that the CAPM is a good description of stock price returns. The market expected return is $7\%$ with $10\%$ volatility and the$$ risk$-$free rate is $3\%.$ New news arrives that does not change any of these numbers but it does change the expected return of the following$$ stocks:

a$.$ Calculate the alpha for each stock in the table.

b$.$ At current market$$ prices, which stocks represent buying$$ opportunities? On which stocks should you put a sell order$$ in$?$