Members of fraternities and sororities are required to volunteer for community service. Do fraternity brothers work more volunteer hours on average than sorority sisters? The data below show the number of volunteer hours worked for twelve randomly selected fraternity Brothers and twelve randomly selected sorority sisters. Brothers: 8 8 5 3 12 5 14 12 11 9 14 10 Sisters: 9 5 7 8 5 4 6 9 5 6 3 8 сл

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