<p>已知一元线性回归方程为<img src="https://learnfile.20230611.cn/learnAppQuestion/50/11/50116f975448154d1551219a07e2e9aa.jpg" style="width: 100%;height: auto;">，且<img src="https://learnfile.20230611.cn/learnAppQuestion/7f/8f/7f8f5879fa421694b61a8f43eae2bf82.jpg - 概率论与数理统计（经管类）(04183)