A farmer divided his land into 2 groups of sections randomly. There is no difference in the quality of the soil between

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answerhappygod
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A farmer divided his land into 2 groups of sections randomly. There is no difference in the quality of the soil between

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A farmer divided his land into 2 groups of sections randomly.There is no difference in the quality of the soil between the 2groups of land. He used Type A seeds in the first group and Type Bseeds in the second group. After 3 months, the heights of the cropsare measured across the two groups of land sections. Is the studyobservational or experimental? If it is an experiment, what is thecontrolled factor?
1-The study is an observational study.
2-The study is an experiment. The controlled factor is the seedtype.
3-Th study is an experiment. The controlled factor is theland.
4-The study is an experiment. The controlled factor is thegrowth of the crops.
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