Returns for the alcoff company over the last 3 years are shown below. what's the standard deviation of the firm's returns? (hint: this is a sample, not a complete population, so the sample standard deviation formula should be used.)year return2010 21.00%2009 −12.50%2008 25.00%a. 20.08%b. 20.59%c. 21.11%d. 21.64%e. 22.18%

What is product differentiation, and how can it be achieved ? what is product positioning? what conditions would head to head product positioning be appropriate?

An outside manufacturer has offered to produce 60,000 daks and ship them directly to andretti's customers. if andretti company accepts this offer, the facilities that it uses to produce daks would be idle; however, fixed manufacturing overhead costs would be reduced by 75%. because the outside manufacturer would pay for all shipping costs, the variable selling expenses would be only two-thirds of their present amount. what is andretti's avoidable cost per unit that it should compare to the price quoted by the outside manufacturer?

U.s. internet advertising revenue grew at the rate of r(t) = 0.82t + 1.14 (0 ≤ t ≤ 4) billion dollars/year between 2002 (t = 0) and 2006 (t = 4). the advertising revenue in 2002 was $5.9 billion.† (a) find an expression f(t) giving the advertising revenue in year t.