Question

In: Statistics and Probability

A researcher is interested to learn if there is a relationship between the level of interaction...

A researcher is interested to learn if there is a relationship between the level of interaction a women in her 20s has with her mother and her life satisfaction ranking. Below is a list of women who fit into each of four level of interaction. Conduct a One-Way ANOVA on the data to determine if a relationship exists. State whether or not a relationship exists and why or why not. Explain in as much detail as possible.

No Interaction

Low Interaction

Moderate Interaction

High Interaction

2

3

3

9

4

3

10

10

4

5

2

8

4

1

1

5

7

2

2

8

8

2

3

4

1

7

10

9

1

8

8

4

8

6

4

1

4

5

3

8

Solutions

Expert Solution

answer:

Hypotheses are:

H0: Mean interaction of the four groups are same.

Ha: Mean interaction of the four groups are not same.

Follwoing table shows the mean, sd, and total of all the four grades:

G1 G2 G3 G4
2 3 3 9
4 3 10 10
4 5 2 8
4 1 1 5
7 2 2 8
8 2 3 4
1 7 10 9
1 8 8 4
8 6 4 1
4 5 3 8
Total 43 42 46 66
Mean 4.3 4.2 4.6 6.6
SD 2.626785 2.347576 3.405877 2.91357

Let G shows the grade. Follwoing table shows the calculation for ANOVA:

G G^2
2 4
4 16
4 16
4 16
7 49
8 64
1 1
1 1
8 64
4 16
3 9
3 9
5 25
1 1
2 4
2 4
7 49
8 64
6 36
5 25
3 9
10 100
2 4
1 1
2 4
3 9
10 100
8 64
4 16
3 9
9 81
10 100
8 64
5 25
8 64
4 16
9 81
4 16
1 1
8 64
Total 197 1301

Here we have

Now

Now

Now

Degree of freedom:

Since there are four groups so we have k = 4 therefore

And since total number of observations are 40 so N = 40 therefore

For F = 1.5703 and degree of freedom 3, 36 P-value of the test is 0.2134. Since P-value is greater than 0.05 so we fail to reject the null hypothesis. That is on the basis of sample evidence we cannot conclude that there is a relationship between the level of interaction a women in her 20s has with her mother and her life satisfaction ranking.

Follwoing is the completed ANOVA table:

ANOVA
Source of Variation SS df MS F P-value F crit
Between Groups 38.275 3 12.7583333 1.57025641 0.21343404 2.86626556
Within Groups 292.5 36 8.125
Total 330.775 39

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