The 13th Juror…?

I was reading a news story on CNN yesterday, and noticed a “survey” called “The 13th Juror. The question asked was, “Is (name of person) guilty of murder?” This bothered me greatly. How on earth is anyone supposed to be able to make such an assessment when no evidence has been seen by the person asked the question, and no testimony has been heard, (excluding what is found in the media, which is sometimes biased)? The whole idea gives me the creeps. Maybe I’m old-fashioned.