某农产品试验产量https://bgk-photo.cdn.bcebos.com/5ab5c9ea15ce36d3071fc1512af33a87e950b1bc.jpg(公斤/亩)和施肥量https://bgk-photo.cdn.bcebos.com/9213b07eca806538edf1e67287dda144ad3482bc.jpg(公斤/亩)7块地的数据资料汇总如下:https://bgk-photo.cdn.bcebos.com/d1a20cf431adcbef9a2f3c67bcaf2edda3cc9fbc.jpg https://bgk-photo.cdn.bcebos.com/574e9258d109b3de83cca609dcbf6c81800a4c5b.jpghttps://bgk-photo.cdn.bcebos.com/6609c93d70cf3bc7a6738f8dc100baa1cd112a5b.jpg https://bgk-photo.cdn.bcebos.com/71cf3bc79f3df8dcea2bcdf0dd11728b471028b8.jpg https://bgk-photo.cdn.bcebos.com/d788d43f8794a4c23735a54a1ef41bd5ad6e39b8.jpg后来发现遗漏的第八块地的数据:https://bgk-photo.cdn.bcebos.com/d01373f082025aafcd413caaebedab64034f1a5b.jpg,https://bgk-photo.cdn.bcebos.com/eac4b74543a98226b7b269469a82b9014a90eb64.jpg。要求汇总全部8块地数据后进行以下各项计算,并对计算结果的经济意义和统计意义做简要的解释。(1)该农产品试验产量对施肥量X(公斤/亩)回归模型https://bgk-photo.cdn.bcebos.com/aec379310a55b3199fefc01453a98226cffc17b8.jpg进行估计;(2)对回归系数(斜率)进行统计假设检验,信度为0.05;(3)估计可决系数并进行统计假设检验,信度为0.05。