In conducting hypothesis testing for difference between two means when samples are dependent (paired samples),the variable under consideration is ; the sample mean difference between the pairs.

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In conducting hypothesis testing for difference between two means when samples are dependent (paired samples),the variable under consideration is  ; the sample mean difference between the pairs.

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The Answer of In conducting hypothesis testing for difference between two means when samples are dependent (paired samples),the variable under consideration is  ; the sample mean difference between the pairs.

In Conducting Hypothesis Testing for Difference Between Two Means When