[Steps Shown] Based on the following table, which groups are significantly different from each other using the Bonferroni test and a significance level of
Question: Based on the following table, which groups are significantly different from each other using the Bonferroni test and a significance level of 0.05
Dependent Variable: STRENGTH
Bonferroni
|
Mean Difference | Std. Error | Sig. |
95% Confidence Interval
________________ Lower Upper Bound Bound |
|||
| 5 % Hardwood |
10% hardwood
15% hardwood 20% hardwood |
-4.00
-5.33 -9.50* |
1.886
1.886 1.886 |
.280
.062 .000 |
-9.52
-10.85 -15.02 |
1.52
.19 -3.98 |
|
| 10% Hardwood |
5% hardwood
15% hardwood 20% hardwood |
4.00
-1.33 -5.50 |
1.886
1.886 1.886 |
.280
1.000 .051 |
-1.52
-6.85 -11.02 |
9.52
4.19 2.16E-02 |
|
| 15% Hardwood |
5% hardwood
10% hardwood 20% hardwood |
5.33
1.33 -4.17 |
1.886
1.886 1.886 |
.062
1.000 .234 |
-.19
-4.19 -9.69 |
10.85
6.85 1.35 |
|
| 20% Hardwood |
5% hardwood
10% hardwood 15% hardwood |
9.50 *
5.50 4.17 |
1.886
1.886 1.886 |
.000
.051 .234 |
3.98
-2.16E-02 -1.35 |
15.02
11.02 9.69 |
|
The mean difference is significant at the .05 level.
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