I received an offer for an interview. They will ask questions about fundamentals of calculus, linear algebra, probability, statistics, economics, and finance. Does anyone know which kind of questions I can expect from them? Particularly, I am wondering if they will ask more o less basic questions (let's say, how to compute the eigenvectors) or in depth questions (find likelihood ratio critical region from a population with a certain probability density function). Of course, both questions can be seen as 'fundamentals', but they are surely on a different level of difficulty.