{"blocks": [{"key": "f2308a7c", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "749fb359", "text": "Evaluating push-notification quality for a consumer app", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "8189fb38", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "072c2c56", "text": "Which metrics would you track to measure the quality of push notifications? How would you define and set thresholds for “high-quality” notifications? Design an experiment to evaluate a new push-notification algorithm at launch.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "30fc791b", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "93b18108", "text": "Think engagement, retention, opt-outs, control-vs-treatment setup, sample size.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}