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Many politicians believe that the Occupy Wall Street protesters are not representative of the average American....

Many politicians believe that the Occupy Wall Street protesters are not representative of the average American. You read that the average annual income of American adults is $40,000. You decide to test his claim by taking a random sample of 40 Occupy protesters. You find an average income of $39,000 and a standard deviation of $2,500 in your sample. Is there sufficient evidence at the alpha=.01 level to conclude that on average income of Occupy Wall Street protesters is significantly different than $40,000?

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