Exhibit 13-21 Sum of Squares Between Groups (Treatment) 6,000.0 Within Groups (Error) Source of Variation Total Degrees of Freedom 5 24 29 The population proportion are all the same The row and column variables are independent Mean Square The population means are all equal. At least on of the population means is different 1,200 288 Refer to Exhibit 13-21. What is the correct null hypothesis in this problem? F

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