Four real estate agents were asked to appraise the values of 10 houses in the Nianta district, stanbul. The appraisals were expressed in thousands of dollars. The table below shows the results.

Source of Variation Sum of Squares Between agents 270 Between houses 1100 Error 1900

Test the null hypothesis that population mean assessments are the same for these four realestate agents against the alternative hypothesis that at least one of thepopulation mean assessmentsis different from the others.

(Note:Questions from (13) to (18) are interrelated and will be answered based on this problem.)

(13) Calculate themean squares between agents. (In your answer, usetwodecimal places, e.g.3.14)