The following data summarize the results from an independentmeasures study comparing three treatment conditions.
M = 2
n = 10
T = 20
s^{2} = 2.67
M = 3
n = 10
T = 30
s^{2} = 2.00
M = 4
n= 10
T = 40
s^{2} = 1.33
a. Use an ANOVA with
b. Calculate
a.
To find: Whether there are any significant differences among the three treatment means using ANOVA with
Given info:
The data with appropriate values are already given in the question.












Calculations:
Step 1:
Null hypothesis:
Alternate hypothesis:
Step 2: Compute degrees of freedom
Similarly,
Critical value:
With
Step 3: Compute Fratio
Also,
He
b.
To find: The effect size
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