Debug A/B Test Python Code (Metric Computation and Statistical Testing)

You will receive Python code intended to evaluate an A/B experiment. Your job is to inspect the existing implementation, point out its errors or analytical weaknesses, and describe how to correct them. Input The input is a user-level dataset, such as a pandas DataFrame, containing: user_id variant, whose value is either { 'A', 'B' } exposure, whose value is either {0, 1} metric, which can include missing values Provided code (example) Tasks Find and discuss at least three…