What is an alternative for an unrelated t-test?Select one:a.Related t-testb.Mann-Whitney Uc.Wilcoxond.Unrelated ANOVA

To determine an alternative for an unrelated t-test, we first need to understand the context in which the unrelated t-test is used. The unrelated t-test, also known as the independent samples t-test, is typically employed to compare the means of two independent groups.

Options to Consider:

1. Related t-test: This is used for comparing means from the same group at different times or under different conditions, not applicable for unrelated samples.

2. Mann-Whitney U: This is a non-parametric test used to determine whether there are differences between two independent groups. It is suitable as an alternative when the assumption of normality for the t-test is not met.

3. Wilcoxon: This usually refers to the Wilcoxon signed-rank test, which is for paired samples, similar to the related t-test and not appropriate for independent samples.

4. Unrelated ANOVA: This test, specifically the one-way ANOVA, is used when comparing means across three or more groups but is not a direct alternative for a two-group comparison.

Conclusion:

Given the options, the most suitable alternative for an unrelated t-test is b. Mann-Whitney U, as it does not assume normal distribution and is specifically designed for comparing two independent groups.