You ran an A/B test on a signup flow change. Variant A had 24,800 users and 2,728 signups, while Variant B had 25,100 users and 2,962 signups. You want to evaluate the result at a 5% significance level and explain what else you would consider before recommending a rollout.
How would you analyze whether Variant B meaningfully outperformed Variant A, and what factors would you consider in deciding whether to ship it?