<p>设总体X服从正态分布<img src="https://file.gaojiufeng.cn/learnAppQuestion/ab/2f/ab2f12f39f400cc008da802f2acdc2b7.jpg" style="width: 100%;height: auto;">，其中<img src="https://file.gaojiufeng.cn/learnAppQuestion/02/d8/02d8e76a5bb26611019f7f6f70310bad.jpg" style="width: 100%;height: auto;">未知，<img src="https://file.gaojiufeng.cn/learnAppQuestion/73/2b/732b6c1dc5b4020e0745665cdd5287fe.jpg" style="width: 100%;height: auto;">为其样本，若检验假设为<img src="https://file.gaojiufeng.cn/learnAppQuestion/f1/fa/f1fad4be636ac843eab5a6d6eaabe200.jpg" style="width: 100%;height: auto;">则采用的检验统计量应为_________