The Florida Game and Fish Commission desires to compare the amounts of residue from three chemicals found in the brain tissue of brown pelicans. Independent random samples of ten pelicans each yielded the accompanying results (measurements in parts per million). Is there evidence of sufficient differences among the mean residue amounts, at the 5% level of significance?
|
Chemical |
| Statistic |
DDE |
DDD |
DDT |
| Mean |
0.032 |
0.022 |
0.041 |
| Standard deviation |
0.014 |
0.008 |
0.017 |