{"blocks": [{"key": "05be688b", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "e6a15927", "text": "Evaluating a new push-notification system for a social app.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "9633a011", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "0ce4487c", "text": "Define the key metrics you would track to measure notification quality. 2. How would you decide whether to launch the new notification experience? 3. If one metric improves while another declines after the experiment, how would you analyze and reconcile the discrepancy?", "type": "unordered-list-item", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "b712516c", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "b9701fa9", "text": "Consider engagement, retention, churn, user annoyance; design an A/B test and deep-dive segment analysis.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}