Design A/B Test to Evaluate Payment Method Impact

##### Scenario A countrywide rollout of a new payment option is being considered. You can run an A/B test to evaluate business impact before launch. ##### Question How would you design an A/B experiment to assess whether the new payment method should be launched? Suppose conversion rate rises while average order value drops. How do you trade off these conflicting metrics, and how would you communicate the recommendation to the product team? ##### Hints Define primary/guardrail metrics, compute overall revenue or LTV impact, discuss statistical significance and business context.