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A researcher hypothesizes that the national mean on the verbal SAT is 451. A sample of 121 seniors from a high school in an affluent

A researcher hypothesizes that the national mean on the verbal SAT is 451. A sample of 121 seniors from a high school in an affluent suburb of Cleveland yields a mean of 470 and an estimated standard error of the mean of 8.86. Test the hypothesis at the .05 level

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