设随机变量X服从正态分布N(3,16),则随机变量X的标准差为
A.4
B.9
C.12
D.16
正确答案是A
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。
本文链接:https://doc.20230611.cn/post/522290.html
上一篇:Passage TwoDr. Mary Jo Bane is the associate director of the Center for Research on Women. Her recent study found “surprising evidence of the persistence of American commitments to family life”, which cast doubt on some common myths about America
下一篇:暂准进出境货物的特征有()