Asking for a statistical analysis is an unreasonably high bar. See the link I provided in a sibling comment, in which the copyright office plainly states as muc

Asking for a statistical analysis is an unreasonably high bar. See the link I provided in a sibling comment, in which the copyright office plainly states as much and explains their guidelines. https://www.federalregister.gov/documents/2023/03/16/2023-05321/copyright-registration-guidance-works-containing-material-generated-by-artificial-intelligence https://www.federalregister.gov/documents/2023/03/16/2023-05...