A farmer has a 160 acre tract of land that he is planting in corn. He has heard about advances in fertilizer technology that impacts yield. He divides his field into four sections and each section into four parts. He has three type of fertilizer to test and no fertilizer. He randomly selects a part of a section and then randomly selects a type of fertilizer for that part of a section so that each section has all four applications applied to it. The yields in bushel per acres are given below. Test at
if there is a difference in yields.
| | Field A | Field B | Field C | Field D |
| No fertilizer | 5.7 | 10.4 | 7.3 | 9.0 |
| Traditional | 4.5 | 8.6 | 6.1 | 10.6 |
| Liquid | 4.1 | 6.3 | 5.8 | 7.2 |
| Granular | 2.6 | 7.2 | 4.6 | 8.7 |
◦ Fertilizer does not result in significantly different yields.
◦ Fertilizer does result in significantly different yields.
USA—the land of diversity.
The gastrointestinal tract and the process of digestion.
Internal female reproductive tract.
Changes in Land Configuration and Surface Characteristics
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