Why does a monopolistically competitive firm earn zero economic profits (normal profits) in the long run

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.

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.

According to the textbook chapter, “the emotional connection of distinguishing differences and conflict”, which of the following groups of terms describes best the skills/resources that managers need when managing differences in their organization? energy, commitment, tolerance, and appreciation energy, adequate funding, tolerance, and appreciation funding, tolerance, a strong hr department, and tolerance energy, a strong hr department, patience, and strong leadership skills