The largest reduction in a portfolio's risk is achieved when the number of stocks in the portfolio is increased from

________ is a statistical technique used to isolate the individual effects of a number of factors on a single outcome

Fill in the blank(s) with correct word

A monopolist faces the inverse demand curve P = 60 - Q. It has variable costs of Q2 so that its marginal costs are 2Q, and it has fixed costs of 30. At its profit maximizing output level, the monopoly's average cost is

A) 11. B) 13. C) 17. D) 21.5.