Independent-measures study produces sample means
An independent-measures study produces sample means of M1 = 35 and M2 = 31 and a pooled variance of 25. For this study, Cohen's d = ____.
d = 4/25
d = 4/5
d = 25/4
d = 5/4
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The homogeneity of variance assumption states that the two population variances are equal.
For an independent-measures research study, the data show an 8-point difference between the two treatment means and a pooled variance of 4. Given this information, what is the value of Cohen's d?
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Which of the following confidence intervals also points out a significant difference between treatments with a = .05?
Which of the following possibilities is a serious concern with a repeated-measures study?
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