Three real estate agents were each asked to assess the values of five houses in a neighborhood. The results, in thousands of dollars, are given in the table. Prepare the analysis of variance table, and test the null hypothesis that population mean valuations are the same for the three real estate agents.                       AgentHouse      A        B        C   1         210    218    226   2         192    190    198   3         183    187    185   4         227    223    237   5         242    240    237

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