{"blocks": [{"key": "6c26d1d7", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "c336039a", "text": "A video-sharing platform wants to know whether users’ first uploaded videos tend to be shorter than their later uploads.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "01eff320", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "1c59bcf0", "text": "Describe how you would test the hypothesis that users’ initial video posts are shorter. Define the data slice, metrics, statistical test, and provide high-level SQL or pseudo-code for the analysis.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "95ce1c63", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "227b81c8", "text": "Compare first-video length vs. subsequent average per user; control for outliers and posting date distribution.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}