{"blocks": [{"key": "ac14d5fd", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "d0a1d7dd", "text": "Daily active users and conversion rates for a web product unexpectedly drop.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "397cc744", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "6be9256f", "text": "If product performance suddenly degrades, list plausible root causes and the analyses you would run to validate each.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "4cb7ba8e", "text": "Describe how you would design an A/B experiment to test a proposed fix.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "12a1c8be", "text": "Which primary, secondary, and guardrail metrics would you track and why?", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "26f0ee0b", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "3bbc0806", "text": "Think instrumentation issues, release roll-outs, external events; outline experiment power, duration, metric sensitivity.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}