In-App Purchase A/B Test Design & Evaluation

##### Question TikTok is running an A/B test on two in-app purchase pages for a mobile game. State your hypotheses for why Page A (higher price, fewer buyers) could outperform Page B (lower price, more buyers) and vice-versa. List the primary and secondary metrics you would track (e.g., conversion rate, ARPU, LTV, ROI) and explain why. Describe the statistical approach you would use to determine significance and how you would check if the current sample size provides enough power. Explain how you incorporate promotional cost ("spend X, get bonus Y") into your ROI calculation. Propose a follow-up experiment based on the initial results.