When she was awake , she found that she was standi When she was awake , she found that she was standing on _____ seemed to be a pie 分类:西安交通大学发电厂电气部分(高起专) 题型:选择题 查看答案
设为取自总体的样本,为样本均值,,则服从自由度为的分布的统计量为( )。(A)(B)(C)(D 设为取自总体的样本,为样本均值,,则服从自由度为的分布的统计量为( )。(A)(B)(C)(D) 分类:西安交通大学发电厂电气部分(高起专) 题型:选择题 查看答案