Three types of fertilizer are to be tested to see which one yields more corn crop. Forty similar plots of land were available for testing purposes. The 40 plots are divided at random into four groups, 10 plots in each group. Fertilizer 1 was applied to each of the 10 corm plots in Group 1. Similarly. Fortilizers 2 and 3 were applied to the plots in Groups 2 and 3, respectively. The corn plants in Group 4 were not given any fertizer; it will serve as the control group. The data is given below. Yield Fertilizer 34 34 34 F1 Control Control Control Control Control Control Control 29 20 25 35 29 Control Control Suppose we created three dummy variables FertilizerF1, FertilizerF2, FertilizerF3, one for each of the fertilizer groups and we fit the model Yield - beta0 + betal FertilizerF1 + beta2 FertilizerF2 + beta3 FertilizerF3+ epsilon

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