最新提问
我的动态
登录后查看动态
题目内容双击单词支持查询和收藏哦～
In the distribution of X, the mean is 10, and the standard deviation is 0.6;in the distribution of Y, the mean is12,and the standard deviation is 0.7.
Quantity A
The standard deviation of X when all the numbers in X increase by 3
Quantity B
The standard deviation of y when all the numbers in Y increase by 2
B显示答案
以上解析由 考满分老师提供。
