Shack Homebuilders Limited is evaluating a new promotional campaign that could increase home sales. Possible outcomes and probabilities of the outcomes are shown next. Possible Outcomes Ineffective campaign Normal response Extremely effective Additional Sales in Units 60 100 120 Probabilities 0.60 0.20 0.20 Compute the coefficient of variation. (Do not round intermediate calculations. Round your answer to 3 decimal places.) Coefficient of variation Five investment alternatives have the following returns and standard deviations of returns. Alternatives A B C D E Returns: Expected Value $ 1,330 1,700 9,400 1,630 67,900 Standard Deviation $ 1,250 820 8,600 1,150 22,100 Calculate the coefficient of variation and rank the five alternatives from the lowest risk to the highest risk by using the coefficient of variation. (Round your answers to 3 decimal places.) Alternatives Coefficient of Variation Rank A B C E