设<img src="https://static.zxtiku.com/wangke/imgs/topic/c3b5b0704b23b1a2016a67cadf9c32fe.jpg"/>是来自总体<img src="https://static.zxtiku.com/wangke/imgs/topic/8c5ad4c3d11c72a83361dc8362c52058.jpg"/>的样本，令<img src="https://static.zxtiku.com/wangke/imgs/topic/79c7ef0a46db5b6833b8e59902f10ed1.jpg"/> 则Y ~（）<br/> A、<img src="https://static.zxtiku.com/wangke/imgs/topic/baecc623728089e15aa400914ec27384.jpg"/><br/> B、<img src="https://static.zxtiku.com/wangke/imgs/topic/8c5ad4c3d11c72a83361dc8362c52058.jpg"/><br/> C、<img src="https://static.zxtiku.com/wangke/imgs/topic/71c290e20e65c72ebf58f14a1964d09d.jpg"/><br/> D、<img src="https://static.zxtiku.com/wangke/imgs/topic/9dfe9e60376ca651ac4546b508de7f4d.jpg"/>