In order to establish a "well-founded fear" of persecution, an asylum applicant need only show a reasonable possibility that she or he will be persecuted. INS v. Cardoza-Fonseca, 480 U.S. 421 (1987), The Supreme Court has stated that the following is sufficient to establish a well-founded fear having a fear of an event happening when there is less than a 50% chance that it will take place, and "establishing a 10% chance of being shot, torture, or...otherwise persecuted."Cardoza-Fonseca, 480 U.S. 421. An applicant who establishes past persecution by the government (or an entity the government cannot or will not control) on acount of one of the five protection grounds has met that test and established a rebuttable presumption that she or he has a well-founded fear of future persecution. 8. C.F.R. § 208.13(b)(1), 8 C.F.R. § 208.13(b)(2), Ayele v. Holder, 564 F.3d 862, 868 (7th Cir. 2009).

What is the reasonable possibility standard for establishing a well-founded fear of persecution for asylum applicants?