Published medical school acceptance rates by institution can be misleading in that there are many factors to consider, including the total number of applicants from any given undergraduate institution and the screening process used by that institution in support of applicants. The University of Michigan does not have a pre-medical committee screening medical school applicants; thus, any student who wishes to apply to medical school applies independently.
Historically, University of Michigan students have been accepted to medical schools at a rate well above the national average, but it is up to you to maximize your chances for admission by familiarizing yourself thoroughly with the mechanics and timelines of the application process, putting together a compelling presentation of your candidacy, and applying realistically and judiciously.