You decide to form a portfolio of the following amounts invested in the following stocks. What is the beta of the portfolio? Stock Exxon IBM General Motors Microsoft a) 1.01 b) 1.06 Amount $2,000 $3,000 $1,000 $4,000 c) 12.6 d) 51.6 Beta Expected Return 0.60 0.95 1.15 1.35 e) 4.05 9% 13% 13% 14%