you hold a diversified portfolio consisting of a $5000 investment in each of 20 different common stocks ( 100,000 total invested). the portfolio beta is equal to 1.15. you have decided to sell one of your stocks, a stock whose beta is equal to 2, for $5000 net and to use the proceeds to buy $5000 of stock in a company whose beta is equal to 0.

what is the net beta of the portfolio?