an experiment to investigate the performance of four different brands of spark plugs intended for use on a 125 cc motorcycle, five plugs of each brand were tested, and the number of miles (at a constant speed) until failure was observed. A partially completed ANOVA table is given. Fill in the missing entries, and test the relevant hypotheses using a 0.05 level of significance. (Round your answers to two decimal places.) Source of Variation df Sum of Squares Mean Square F Treatments Error 234,981.04 Total 318,490.22 Calculate the test statistic and find the P-value. (Round your answer to two decimal places.) F = P-value =

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