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A preliminary study of hourly wages paid to unskilled employees in four metropolitan areas was conducted....

A preliminary study of hourly wages paid to unskilled employees in four metropolitan areas was conducted. Eight employees were included from Area A, 11 from Area B, 10 from Area C, and five from Area D. The test statistic was computed to be 4.03. What can we conclude at the 0.01 level?

A. Mean hourly wages of unskilled employees of all areas are equal

B. Mean hourly wages in at least 1 of the metropolitan areas are different

C. More degrees of freedom are needed

D. None of these is correct

Math   Statistics-And-Probability   
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