{"blocks": [{"key": "e3885c70", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "a9d9529e", "text": "Comparing price inflation on the DoorDash platform versus in-store menu prices over time", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "f5a0ec04", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "aae48bed", "text": "Describe how you would quantify and monitor inflation on the platform relative to in-store prices, build a forecasting model, and determine the required sample size and confidence intervals when no A/B test is possible.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "035d58b0", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "04873288", "text": "Cover data collection, time-series analysis, variance estimation, confidence intervals, minimum detectable effect.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}