两组小样本均数比较的t检验,要求资料
A、来自正态总体且两总体方差相等
B、资料来自正态总体
C、两总体方差相等
D、两总体方差不相等
E、不一定来自正态总体
参考答案:A
根据句意及首字母(汉语)的提示,补全单词.
1. I w if he can come to my birthday party.
2. If you are in a hurry, take the most d road.
3. Tom's mother told him to be a b_____ man.
4. The museum is between the _____ (家具) store and the library.
5. Losing a little money doesn't (使烦恼)me.
小儿腹泻的护理措施中错误的是()
A.严格消毒、隔离
B.暂停辅食
C.继续母乳喂养
D.禁食24小时
E.详细记录大便的量及性状