In a biological experiment, three concentrations of a certain chemical are used to
enhance the growth of a certain type of plant over a specified period of time. The
following growth data, in centimeters, were recorded for the plants that survived:
Concentration A Concentration B Concentration C
8.2 7.7 6.9
8.7 8.4 5.8
9.4 8.6 7.2
9.2 8.1 6.8
6.1 8.0 7.4
Using the Analysis of Variance, is there a significant difference in the average growth of
these plants for the different concentration of the chemical? Use a 0.01 level of
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