3. You hold a diversified portfolio consisting of a $5,000 investment in each of 20 different common stocks. The portfolio beta is equal to 2.2. You have decided to sell one of your stocks, a lead mining stock whose b =1.8, for $5,000 net and to use the proceeds to buy $5,000 of stock in a steel company whose b =3.7. What will be the new beta of the portfolio?