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Bruce Kuhlman, owner of Kuhlman Farms, wishes to use brand of fertilizer which will produce maximum yield per acre of wheat. Mr. Kuhlman can select from four different commercial brands: Wolfe, White, Korosa and Vigro. To begin, Mr. Kuhlman divides his field into 24 plots of equal size. Wheat is then planted at same time in same manner. Only difference in plots is he randomly assigns Wolfe brand of fertilizer to six plots, White brand to six plots, Korosa brand to six plots and Vigro brand to six plots. At end of growing season, he records number of bushels of wheat produced on each plot. Results, in bushels at the end of growing season are (Solve manually & by excel)
WOLFE : 13; 15; 14; 11; 12; 15WHITE: 21; 16; 19; 20; 18; 19KOROSA: 12; 14, 12, 11, 12, 15VIGRO: 18; 20; 21; 18; 22; 19
1. Write down the hypotheses?2. What is the computed F value?3. Determine your decision rule? 4. Compute statistical decision?5. What is your management decision regarding fertilizers?6. Which brands vary?
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