1. Grow More Fertiliser claim to increase the crop yields. A farmer decides to see if this works on a variety of different crops. He first looks up a national database of crop yields to see what he should expect. All figures are per acre. $ 1. Crop Wheat Corn Potatoes Coffee Oats Unit bushels bushels cut Ib bushels Mean Yield 44.5 145.2 410.8 1215.4 63.7 Variance 17.2 111.4 199.8 26561 14.1 The farmer plants out the following acres of crops, and obtains the following yields. Carry out separate hypothesis tests on each crop to see if the fertiliser had an effect or not. Crop Wheat Corn Potatoes Coffee Oats Acres planted 5 10 10 2 20 Total Yield 237 1508 4200 2675 1298