题目内容

If n1=10 and n2=11, the d.f. in the t test for two independent means should be:()

A. 10
B. 19
C. 11
D. 1
E. 21

查看答案

搜索结果不匹配？点我反馈

更多问题

Statistical inference includes:()

A. central tendency and dispersion
B. t test and z test
C. estimation and hypothesis testing
D. distribution and sampling error
E. discrete and continuous

查看答案

For the t distribution, when t value increases, its corresponding P value:()

A. increases
B. unchanged
C. decreases
D. increases, and then decreases
E. decreases, and then increases

查看答案

The type Ⅰ error happens when: ()

A. H0 is true
B. H0 is rejected
C. H0 is false, but we accept H0
D. H0 is true, but we reject H0
E. P is samll

查看答案

There is a data set shown as follow: 17, 1, 12, 6, 9, 2, 8, 41. The arithmetic mean is:()

A. 8.5
B. 12
C. 8
D. 17
E. 9

查看答案

If n1=10 and n2=11, the d.f. in the t test for two independent means should be:()

A. 10 B. 19 C. 11 D. 1 E. 21

Statistical inference includes:()

For the t distribution, when t value increases, its corresponding P value:()

The type Ⅰ error happens when: ()

There is a data set shown as follow: 17, 1, 12, 6, 9, 2, 8, 41. The arithmetic mean is:()

A. 10
B. 19
C. 11
D. 1
E. 21