Amazon BA/BI Interview

My friend has her on-site in few days. I would appreciate it if you can tell me what types of questions one can expect for the Business Analyst/ Business Intelligence positions @Amazon. I know SQL is must. How about Statistics: hypothesis testing, AB testing etc? Python? Dashboards? Thank you again! #BusinessAnalyst #BusinessIntelligence TC: 120K, YOE: 2 Friend's TC: 100K, YOE: 1.5