Batteries once more Another student analyzed the battery data from Exercise 25, using a one way ANOVA He considered the experimental factor to be an 8 level factor consisting of the 8 possible combinations of Brand and Environment Here are the boxplots for the 8 treatments and a one way ANOVA Compare this analysis with the one performed in Exercise 25 Which one provides a better understanding of the data Explain Time to failure (min) 175 150 125 100 128 H CA CB CC CD RA RB RC RD Treatment Sum of Mean Source DF Squares Square F ratio P value Treatment 7 31895 8 4556 54 93 189 0 0001 Error 8 391 167 48 8958 Total 15 32286 9

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Question: Batteries once more Another student analyzed the battery data from Exercise 25, using a one-way ANOVA. He considered the experimental factor to be an 8-level

Batteries once more Another student analyzed the battery data from Exercise 25, using a one-way ANOVA.

He considered the experimental factor to be an 8-level factor consisting of the 8 possible combinations of Brand and Environment. Here are the boxplots for the 8 treatments and a one-way ANOVA:

Time to failure (min) 175 150 125 100 128 H CA CB

Compare this analysis with the one performed in Exercise 25. Which one provides a better understanding of the data? Explain.

Time to failure (min) 175 150 125 100 128 H CA CB CC CD RA RB RC RD Treatment Sum of Mean Source DF Squares Square F-ratio P-value Treatment 7 31895.8 4556.54 93.189

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