选择题:设随机变量X~t(n)n>1,令Y=2,则Y服从()( A ) Y ~ x 2 ( n ) ; ( 题目分类:概率论与数理统计(一) 题目类型:选择题 查看权限:VIP 题目内容: 设随机变量X~t(n)n>1,令Y=2,则Y服从()( A ) Y ~ x 2 ( n ) ; ( B ) Y ~ x 2 ( n - 1 ) ( C ) Y ~ F ( 1 , n ) ; ( D ) Y ~ F ( n , 1 ) . 参考答案:
He has drunk too much to drive home safely.选择一项:A. He has drunk too much to drive home safely.选择一项:A. 他喝了太多酒去安全开车回家。B. 他喝了太多酒以致不能安全 分类:概率论与数理统计(一) 题型:选择题 查看答案
When we heard of it, we were deeply _________.选择一项 When we heard of it, we were deeply _________.选择一项:A. movingB. moveC. moved 分类:概率论与数理统计(一) 题型:选择题 查看答案
All of these presents _________ good to me. 选择一项:A All of these presents _________ good to me. 选择一项:A. hearB. soundC. listen 分类:概率论与数理统计(一) 题型:选择题 查看答案
The Olympic Committee has drawn up strict rules fo The Olympic Committee has drawn up strict rules for the sportsmen to ________. A 分类:概率论与数理统计(一) 题型:选择题 查看答案