In the Equations for a T-Test in Matched or Dependent $t_{a k t}=\frac{\bar{X}_{D}}{s_{D} / \sqrt{n}}$

question 8

Multiple Choice

In the equations for a t-test in matched or dependent samples, $t_{a k t}=\frac{\bar{X}_{D}}{s_{D} / \sqrt{n}}$ , $\bar{X}_{D}$ is ______.

• A) the standard deviation
• B) the variance
• C) the mean of one group
• D) the mean of the difference between each pair of scores in the sample

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A decade marked by significant social, political, and cultural change, often associated with movements for civil rights, peace, and liberation.