The nitrogen contents of red clover plants inoculated with three strains of Rhizobium are given here:

a. Is there evidence of a difference in the effects of the three treatments on the mean ­nitrogen content? Analyze the data completely, and draw conclusions based on your analysis. Use a = .01.
b. Was there any evidence of a violation in the conditions required to ­conduct your analysis in part (a)?

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3DOKI K 3DOKS 3o 3DOK7 194 32.6 27.0 32.1 33.0 182 24.6 25.5 194 21.7 20.8 20.7 21.0 20.5 18.8 18.6 20.1 21.3