{"blocks": [{"key": "51fd193b", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "b93f7511", "text": "Fraud Risk – Sudden drop in credit-card approval rate", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "22009751", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "b6f3772d", "text": "Our approval rate has been stable for months and suddenly dropped in a single day. How would you diagnose the root cause? Outline your investigative steps, data needed, and potential hypotheses.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "ee2074ff", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "e43eca56", "text": "Consider traffic mix, rule or model changes, data pipeline issues, seasonality, and experiment effects.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}