A nondirectional alternative hypothesis claims that no difference will be found between the research variables. This statement is false.
The nondirectional alternative hypothesis states that there is a difference between the mean scores of two groups but it does not specify which group is expected to be larger or which one is supposed to be smaller. In a way, it states that the dependent variable will be impacted by the independent variable but the direction of the effect is not specified.
Therefore, a nondirectional alternative hypothesis is two-tailed hypothesis which does not predict the direction of the difference or relationship (for example, boys and girls can be different in terms of helpfulness).
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