Saved Help So Problem 13-4 Coefficient of variation (LO13-1) Shack Homebuilders Limited is evaluating a new promotional campaign that could increase home sales. Possible outcomes and probabilities of the outcomes are shown next. Additional Possible Outcomes Sales in Units Probabilities Ineffective campaign 50 Normal response Extremely effective 130 110 8.30 0.30 0.40 Compute the coefficient of variation. (Do not round intermediate calculations. Round your answer to 3 decimal places.) Coefficient of variation