In a study of the mutual effects of the air pollutants ozone and sulfur dioxide. Blue Lake snap beans were grown in open-top field chambers. Some chambers were fumigated repeatedly with sulfur dioxide. The air in some chambers was carbon filtered to remove ambient ozone. There were three chambers per treatment combination, allocated at random. After one month of treatment, total yield (kg) of bean pods was recorded for each chamber, with results shown in the accompanying table.39 For these data, SS(between) = 1.3538 and SS(within) = 0.27513.

(a) Construct the ANOVA table.
(b) The P-value for a one-way ANOVA F test is 0.0002. If α = 0.05, what is your conclusion regarding the null hypothesis?

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Ozone absentOzone present Sulfur dioxide Sulfur dioxide Abent Presemt Ahsent Present L52 185 1.39 1.587 02370.180.213 0.056 1.49 1.55 1.21 4171.3400.70 1.15 1.30 157 0.65 0.76 ,69 Mean SD