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A published report of a repeated-measures research study includes the following description of the statistical analysis....

A published report of a repeated-measures research study includes the following description of the statistical analysis. “The results show significant differences among the treatment conditions, F(2, 26) = 4.87, p < .05.”

a. How many treatment conditions were compared in the study?

b. How many individuals participated in the study?

Math   Statistics-And-Probability   
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Answer #1

A published report of a repeated-measures research study includes the following description of the statistical analysis. “The results show significant differences among the treatment conditions,

F(2, 26) = 4.87,

p < .05

This is the test for population means.

H0 : All population means are equal.

H1 : Atleast one of the population mean differ.

Numerator degrees of freedoms = k-1 = 2

Denominator degrees of freedoms = N-k = 26

a. How many treatment conditions were compared in the study?

k-1 = 2

k = 2+1 = 3

b. How many individuals participated in the study?

N-k = 26

N - 3 = 26

N = 26+3 = 29

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