We used a chi-squared test to test whether are not the null hypothesis is true. And is also used to determine whether there is a significant difference between the expected frequencies and the observed frequencies in one or more categories.
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The critical value is 3.84146. The result from the χ² test is 1.6667 for species A. For species B it has a χ² value of 2.8571, and lastly species C with a χ² value of 0.2778, neither species A, B or C has a greater value χ² value that the critical value.
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Therefore, for each of the three species A, B and C, we accept the null hypothesis, as for each of the species the Chi value was less than the critical value. This means that for the three species we observed, there was no difference in their abundance in acidic and alkaline conditions.
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For the future, a potential implication of these results could mean that these three species may have a potential to grow in soil conditions where the pH is unstable due to environmental factors.
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