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In an experiment to investigate the performance of four different brands of spark plugs intended for...

In 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. (Give the answer to two decimal places.)

Source of
Variation		 df Sum of
Squares		 Mean
Square		 F
Treatments   
Error 235953.04 N/a
Total 314659.61 N/A
Math   Statistics-And-Probability   
0 0
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