Eighty thousand people attending a professional football game filled out surveys asking their opinions on using tax money to upgrade the football stadium. Seventy percent said that they supported the use of tax money. Then a pollster surveyed a simple random sample of 500 voters, and only 30% of the voters in this sample supported the use of tax money. The owner of the football team claims that the survey done at the football stadium is more reliable, because the sample size was much larger. Is he right? Explain.