二、 单个正态总体参数的区间估计设https://bgk-photo.cdn.bcebos.com/e4dde71190ef76c6a91da34a8d16fdfaae516787.jpg为https://bgk-photo.cdn.bcebos.com/267f9e2f0708283883fc8475a899a9014d08f1da.jpg的样本,对给定的置信水平https://bgk-photo.cdn.bcebos.com/f3d3572c11dfa9ec26df0e7672d0f703908fc1da.jpg,https://bgk-photo.cdn.bcebos.com/21a4462309f7905258ee1f5f1cf3d7ca7acbd5da.jpg,我们来分别研究参数https://bgk-photo.cdn.bcebos.com/1ad5ad6eddc451dada39548aa6fd5266d1163287.jpg与https://bgk-photo.cdn.bcebos.com/ac4bd11373f08202285dc95e5bfbfbedaa641b87.jpg的区间估计。例 在上述前提下,求https://bgk-photo.cdn.bcebos.com/ac345982b2b7d0a2ff385cfcdbef76094a369ada.jpg的置信水平为https://bgk-photo.cdn.bcebos.com/8601a18b87d6277f07dd6a5938381f30e824fc80.jpg的区间估计。