Discussion
If one wishes to compare the means of two independent samples, the appropriate test statistics would be :
Answer: B
The appropriate test is the Student t-test.
The independent-samples t-test compares the means of two independent groups, using the difference between the means relative to its standard error and the t-distribution, which suits the small samples common in biology.
The F-test compares variances, or several means at once in ANOVA. The chi-square test compares observed and expected frequencies of categories, not means. Correlation measures the association between two variables measured on the same individuals.
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