You hold a diversified portfolio consisting of many different common stocks with a total market value of $100,000. the portfolio beta is equal to 1.15. you have decided to sell one of your stocks, a lead mining stock whose beta is equal to 0.7 , for $10,000 net and to use the proceeds to buy $10,000 of stock in a steel company whose beta is equal to 2.3 . what will be the new beta of the portfolio? (round to two digit decimal places, e. g., 1.15)