What does good customer service mean to you?

Suppose you hold a portfolio consisting of a $10,000 investment in each of 8 different common stocks. the portfolio's beta is 1.25. now suppose you decided to sell one of your stocks that has a beta of 1.00 and to use the proceeds to buy a replacement stock with a beta of 1.55. what would the portfolio's new beta be? do not round your intermediate calculations.

Modern firms increasingly rely on other firms to supply goods and services instead of doing these tasks themselves. this increased level of is leading to increased emphasis on management.

Which external factor has enabled addition of special effects in advertisements and tracking of responses of customers over websites?