A t-test for independent samples computed by a researcher on the data from his experiment about the effect of distraction on memory is reported as  t(30) = 2.0 p < .05 1 tail test. Based on this information, what is the effect size evaluated by r2 in this study? (Note: the numerical answers are rounded to 2 decimal places.) A. r2 = 2/30 = 0.07 B. r2 = 2/32 = 0.06 C. r2 = 4/34 = 0.12 D. r2 = 4/30 = 0.13 E. r2 = 4/28 = 0.14 F. None of the above.

Question

A t-test for independent samples computed by a researcher on the data from his experiment about the effect of distraction on memory is reported as  t(30) = 2.0 p < .05 1 tail test. Based on this information, what is the effect size evaluated by r2 in this study? (Note: the numerical answers are rounded to 2 decimal places.)

  • A. r2 = 2/30 = 0.07
  • B. r2 = 2/32 = 0.06
  • C. r2 = 4/34 = 0.12
  • D. r2 = 4/30 = 0.13
  • E. r2 = 4/28 = 0.14
  • F. None of the above.

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