A probabilistic take on isoperimetric-type inequalities

We extend a theorem of Groemer’s on the expected volume of a random polytope in a convex body. The extension involves various ways of generating random convex sets. We also treat the case of absolutely continuous probability measures rather than convex bodies. As an application, we obtain a new proof of a recent result of Lutwak, Yang and Zhang on the volume of Orlicz-centroid bodies.