(Use this information for questions 15-17). A researcher would like to determine if relaxation training will affect the concentration levels for hyperactive individuals. A week prior to training, each participant's concentration on a task is measured. Participants then receive relaxation training and following training their concentration is measured again. The data are as follows: Pre- Post- training training score (X₁) score (X₂) 36 37 39 40 42 41 34 36 36 37 32 31 29 30 30 30 31 32
(Use this information for questions 15-17). A researcher would like to determine if relaxation training will affect the concentration levels for hyperactive individuals. A week prior to training, each participant's concentration on a task is measured. Participants then receive relaxation training and following training their concentration is measured again. The data are as follows: Pre- Post- training training score (X₁) score (X₂) 36 37 39 40 42 41 34 36 36 37 32 31 29 30 30 30 31 32
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter3: Straight Lines And Linear Functions
Section3.3: Modeling Data With Linear Functions
Problem 15SBE
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Question
Compute Cohen’s d to measure the size of the effect.
A) cohen's d=
B) indicate whether this effect was small, medium, or large:
Transcribed Image Text:(Use this information for questions 15-17). A researcher would like to determine if
relaxation training will affect the concentration levels for hyperactive individuals. A week prior
to training, each participant's concentration on a task is measured. Participants then receive
relaxation training and following training their concentration is measured again. The data are
as follows:
Pre-
Post-
training
training
score (X₁)
score (X₂)
36
37
39
40
42
34
36
32
29
30
31
41
36
37
31
30
30
32
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