A farmer wishes to test the effects of a new fertilizer on her tomato yield. She

Question

A farmer wishes to test the effects of a new fertilizer on her tomato yield. She has four equal sized plots of land. One plot has sandy soil, one has rocky soil, one has clay soil, and one has average soil. She divides each of the four plots into three equal-sized portions and randomly labels them A, B, and C. The four A porticoes of land are treated with her old fertilizer, the four B portions of land are treated with the new fertilizer, and the four C portions of land are treated with no fertilizer. At harvest time, the tomato yield is recorded for each section of land. Identify the experimental units. A. the tomato yield at harvest time B. the tomato plants on the various plots of land C. the three types of fertilizer D. the four types of soil

Explanation / Answer

Here farmer want to test the effect of fertilizer on the yield and he assign tretament (fertilzer) to different types of soils. So experimental unit is four type of soil.

Correct option is D.

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