I found a cool online calculator that purports to calculate the number of population participants needed in order to get your desired confidence level. It might come in handy. (although I cannot guarantee its accuracy)
http://www.custominsight.com/articles/random-sample-calculator.asp
F1 in Italy: Look what happens when the downforce comes off
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The excitement came at the start and toward the end of this rather quick
race.
2 hours ago
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