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~

For a population of 1,000,000 used computer batteries, the distribution of the durations that a fully charged battery will power a computer is approximately normal with mean 3.5 hours.The manufacturer of the batteries estimates that 20,000 of the batteries will have a power duration greater than 5.1 hours. Of the following,which is the best estimate of the standard deviation, in hours, of the distribution?
D显示答案
· 相关考点
5.3.2 正态分布
5.3.2 正态分布
以上解析由 考满分老师提供。