穆同学2017-08-24 11:49:21
19题,hhuhuahua xhua xihua xiahua xian划线dde的nnana jna juna ju hna ju huna ju hua那句话hhahaohao nhao nahao nan好难llili jli jili jie理解…wwiw我yyiyi kyi kayi kaiyi kai syi kai shyi kai shi一开始hhahaihai yhai yihai yi whai yi wehai yi wei还以为yyiyi zyi zhyi zhiyi zhi已知jjujunjun zjun zhjun zhi均值
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金程教育顾老师2017-09-06 11:48:36
学员你好,with a variance of 2.45是population的定语,说的是总体方差为2.45
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