Three treatments are compared for the treatment of in a between-subjects study. The following table of results were created to compare the three different treatment options. Treatment 1 Treatment 2 Treatment 3   n = 5 n = 5 n = 5   M = 2 M = 5 M = 8 N = 15 T = 10 T = 25 T = 40 G = 75 SS = 64 SS = 80 SS = 96 ΣX2 = 705   Use an ANOVA with α = .05 to determine whether there are any significant differences among the three treatment means. Calculate η2 as a measure of effect size. State the results as they would appear in a research report.

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Three treatments are compared for the treatment of in a between-subjects study. The following table of results were created to compare the three different treatment options.

Treatment 1

Treatment 2

Treatment 3

 

n = 5

n = 5

n = 5

 

M = 2

M = 5

M = 8

N = 15

T = 10

T = 25

T = 40

G = 75

SS = 64

SS = 80

SS = 96

ΣX2 = 705

 

  1. Use an ANOVA with α = .05 to determine whether there are any significant differences among the three treatment means.
  2. Calculate η2 as a measure of effect size.

State the results as they would appear in a research report.

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