{"blocks": [{"key": "1a2b5117", "text": "Scenario: Security classification model has symmetric 95 % accuracy, base‑rate bad users 5 %. Compute posterior probability a user is bad when flagged.", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "a3382349", "text": "", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "65221358", "text": "Question 1: If 5 % of users are bad and model accuracy is 95 % on both classes, what is P(true bad | predicted bad)? (Hint: Bayes’ theorem)", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}