{
  "id": "workflow-times-two-group",
  "source_type": "original",
  "dataset": "data/workflow-times.csv",
  "prompt": "Compare Group B with Group A. Name the estimand, choose an inference method, verify the binary-regression equivalence, and state the identification limit.",
  "facilitation_sequence": [
    "Commit to the estimand and direction before calculating.",
    "Defend or reject the common-variance assumption.",
    "Verify the coefficient and HC2 standard error equalities.",
    "Remove causal verbs unless the design earns them."
  ],
  "answer_checks": {
    "mean_a": 14,
    "mean_b": 17.5,
    "difference_b_minus_a": 3.5,
    "pooled_df": 7,
    "welch_df": 5.81318681318681,
    "ols_binary_coefficient": 3.5
  }
}