What is a group of 6-23 citizens who hear a trial and decide guilty or not guilty?

A group of 6-23 citizens who hear a trial and decide on a verdict of guilty or not guilty is known as a jury. In criminal cases, a jury typically consists of 12 members, while in civil cases, it can vary in size. The jury's role is to evaluate the evidence presented during the trial and render a decision based on that evidence. Their verdict must usually be unanimous in criminal cases, though some jurisdictions allow for non-unanimous decisions in civil cases.