{"blocks": [{"key": "d8793dae", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "c49e51d2", "text": "Management is concerned about the volume of fake news on the platform and requests a data-driven report.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "72e65140", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "b927b3a3", "text": "How would you design a sampling strategy to estimate the proportion of fake news on Facebook with confidence intervals? Which user-interaction metrics would you analyze to assess the impact of fake news?", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "fbf0e462", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "45d19acc", "text": "Cover random sampling, stratification, estimation of prevalence, significance, and behavioural KPIs such as clicks, shares, dwell-time.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}