Katie is studying aggressionamong adolescent girls. She believes that there is a

Question

Katie is studying aggressionamong adolescent girls. She believes that there is a relationshipbetween the level of interaction a girl has with her mother and herlevel of aggression. She has identified 5 girls who fall into eachof 4 interaction levels and has measured their aggression scores.Her data are given below.

NoInteraction

LowInteraction

ModerateInteraction

HighInteraction

4

4

4

3

5

6

4

4

6

5

3

4

6

4

5

3

5

5

4

3

Source

Sum ofSquares

df

MeanSquare

F

Between groups

9.75

3

3.250

5.91

Within groups

8.80

16

0.550

Total

18.55

19

The assignment (1–2pages):

NoInteraction

LowInteraction

ModerateInteraction

HighInteraction

4

4

4

3

5

6

4

4

6

5

3

4

6

4

5

3

5

5

4

3

Explanation / Answer

For the 2-way ANOVA, thepossible null hypothesesare:

construct confidenceintervals,  

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