设总体X服从正态分布<img src="/lqwvjeImg/0f/0f0c1291a07718810f5a0c5ba3661e19.png">,<img src="/lqwvjeImg/d5/d5f173eace99496b74ea7690890c4bb3.png">为来自该总体的样本,<img src="/lqwvjeImg/ef/ef2bf6d9675c017c54028ca900eb5683.png">为样本均值,<img src="/lqwvjeImg/cc/cc1d39f6f1bb8091671ee3bff031c5e7.png">为样本标准差,欲检验假设<img src="/lqwvjeImg/44/4492a8c8e5ac8f5c54e0984cf50417c5.png">,<img src="/lqwvjeImg/24/249149d33e78fee6316b2bf4ee73af11.png">,则检验用的统计量是( )<br>·<img src="/lqwvjeImg/3b/3b5d4ece08b40e847078e89e18b4d124.png"><br>·<img src="/lqwvjeImg/0e/0ed2de43c6f1b7e2eca1ae525fa81f79.png"><br>·<img src="/lqwvjeImg/14/1438974b2bd22b8fee9d62bded22c040.png"><br>·<img src="/lqwvjeImg/1d/1de853d217fcc34155ce9fe8fd89a674.png">