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2. Was the campaign profitable? a. How much more money did TaskaBella make by running the campaign (excluding advertising costs)? b. What was the cost of the campaign? c. Calculate the ROI of the campaign. Was the campaign profitable? d. What was the opportunity cost of including a control group; how much more could have TaskaBella made with a smaller control group or not having a control group at all? 588103 Sheet1 2017_9_rocketfuel_B5896 Average: 218456.0861 Count: 3528612