i Problem 13-4 (Algo) Coefficient of variation [LO13-1] Shack Homebuilders Limited is evaluating a new promotional campaign that could increase home sales. Possible outcomes an probabilities of the outcomes are shown next. Additional Sales in Possible Outcomes Units Probabilities Ineffective campaign 20 0.40 Normal response 60 0.30 Extremely effective 80 8.30 Compute the coefficient of variation. Note: Do not round intermediate calculations. Round your answer to 3 decimal places. Coefficient of variation