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A farmer wishes to test the effects of a new fertilizer on her potato yield. She has four​ equal-sized plots of land. One plot has sandy​ soil, one has rocky​ soil, one has​ clay-rich 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 portions 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 potato yield is recorded for each section of land. What is the treatment in this​ experiment?


A. the four types of soil

B. the soybean yield at harvest time

C. the soybean plants on the various plots of land

D. the tree types of fertilizer

Answer :

Answer:

D

Step-by-step explanation:

The treatment in the case given is the testing of the fertilizers. For portions labelled A : Old fertilizers, B : New fertilizers , C : No fertilizers.

Each and every soil is treated with 3 different fertilizers at each and every type of soil, the results are interpreted from harvest of soybeans

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