The problems of many firms may be attributed to a traditional control system that failed to continuously monitor the environment and make necessary changes in their strategy and objectives. What companies are you familiar with that responded appropriately (or inappropriately) to environmental change

You hold a diversified $100,000 portfolio consisting of 20 stocks with $5,000 invested in each. the portfolio's beta is 1.12. you plan to sell a stock with b = 0.90 and use the proceeds to buy a new stock with b = 1.50. what will the portfolio's new beta be? do not round your intermediate calculations.