If the special interests ALWAYS answer the phone and the ordinary people only answer 9% of the time, the special interests effectively create 11X the response rate for themselves than that created by the ordinary people.
That 3% becomes 11X 3%, or 33%.
“That 3% becomes 11X 3%, or 33%.”
The odds of that happening over this large a sample are higher than your chances of winning the jackpot at Vegas with three playboy bunnies over your shoulder. Twice.