【单选题】【消耗次数：1】
计算相对数的目的是（ ）
①
为了进行显著性检验
②
为了表示绝对水平
③
为了便于比较
④
为了表示相对水平
参考答案：
复制
纠错
相关题目
【多选题】
显著性水平α与检验拒绝域的关系是（）
①
显著性水平提高意味着拒绝域不变
②
显著性水平提高意味着拒绝域缩小
③
显著性水平降低意味着拒绝域扩大
④
显著性水平降低意味着接受域扩大
⑤
显著性水平提高意味着拒绝域扩大
【单选题】
关于显著性水平α下列错误的是（）
①
是当零假设正确时却被拒绝的概率
②
实际上是犯第一类错误的概率
③
实际上是犯第二类错误的概率
④
取值越大，则犯第一类错误的概率就越大E.就是临界值，即检验接受域与拒绝域的分界点
随机题目
【单选题】
His parents __________ him the opportunity to go to university.
①
ignored
②
neglected
③
refused
④
denied
【单选题】
Graceland, Elvis Presley’s former home, is now a tourist __________ that draws more than 600,000 visitors every year.
①
store
②
attraction
③
appointment
④
arrangement
【单选题】
Great changes __________ in our institute in the last few years.
①
have taken place
②
has taken place
③
took place
④
had taken place
【单选题】
-- Sorry I kept you waiting.
①
I’m sad
②
I don’t care
③
That’s all right. There’s no hurry
④
No, not at all
【单选题】
You have lovely children.
①
No, no, no. They are not
②
Oh, no, no
③
You’re talking too much
④
Thanks
【单选题】
Sorry, I must be leaving now, because there’s a meeting.
①
Oh, no, you can’t
②
Yes, you can leave if you like
③
Do you really have to go? Couldn’t you at least stay for another cup of tea?
④
Oh, no. I don’t understand