(solution) The mean IQ was one hundred in the most US population with a

(solution) The mean IQ was one hundred in the most US population with a

US resident interviewed fifty people who provided higher than seventy-five dollars to the Trump campaign, and you find their average IQ was ninety-six. The mean IQ was one hundred in the most US population with a standard deviation of 15. Was there strong evidence that US residents who provide higher than seventy-five dollars to the Trump campaign have a different IQ than the most U.S. population?