The following data summarize the results from an independent-measures study comparing three treatment conditions.  I II III   n = 6 n = 6 n = 6   M = 1 M = 5 M = 6 N = 18 T = 6 T = 30 T = 36 G = 72 SS = 30 SS = 35 SS = 40 ΣX2 = 477 Use an ANOVA with α = .05 to determine whether there are any significant differences among the three treatment means.  Calculate η2 to measure effect size for the study.  Write a sentence demonstrating how a research report would present the results of the hypothesis test and the measure of effect size.

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The following data summarize the results from an independent-measures study comparing three treatment conditions. 

I

II

III

 

n = 6

n = 6

n = 6

 

M = 1

M = 5

M = 6

N = 18

T = 6

T = 30

T = 36

G = 72

SS = 30

SS = 35

SS = 40

ΣX2 = 477

  1. Use an ANOVA with α = .05 to determine whether there are any significant differences among the three treatment means. 
  2. Calculate η2 to measure effect size for the study. 
  3. Write a sentence demonstrating how a research report would present the results of the hypothesis test and the measure of effect size. 



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