{"blocks": [{"key": "fbb77221", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "20be7939", "text": "E-commerce retailer wants to understand if a 10 % discount increases conversion rate.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "aa533007", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "7ef3f40e", "text": "Design and analyze an A/B test to measure the discount’s impact: state hypotheses, choose metrics, estimate sample size, outline experiment setup, analysis, and how you would interpret results.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "c447597e", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "65ff7b94", "text": "Discuss randomization unit, power, guardrails, significance testing, segmentation, dilution and novelty effects.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}