题目详情
智慧树知到《商务统计》见面课答案,智慧树 知到 见面课答案 商务统计的答案如下：
智慧树知到《商务统计》见面课答案
见面课：常见的假设检验及区间估计（双总体及多总体）
1、问题: One rule that must always be followed in constructing frequency distributions is that __.
选项：
A:adjacent classes must not overlap
B:the midpoint of each class must be a whole number
C:the width of each class is equal to the range
D:the number of intervals must be an odd number
答案: 【adjacent classes must not overlap】
2、问题:image.png
选项：
A:are established correctly
B:are not mutually exclusively
C:are not collectively exhaustive
D:don not reference a population parameter
答案: 【are not collectively exhaustive】
3、问题:When a false null hypothesis is not rejected, the researcher has made a
选项：
A: type II error.
B: sampling error.
C:powerful error.
D: type I error
答案: 【 type II error.】
4、问题:image.png
选项：
A:image.png
B:image.png
C:image.png
D:image.png
答案: 【image.png】
5、问题:Which of the following is an appropriate null hypothesis?
选项：
A:image.png
B:image.png
C:image.png
D:image.png
答案: 【image.png】
6、问题:In what type of test is the variable of interest the difference between the values of the observations rather than the observations themselves?
选项：
A:a test for the equality of variances from 2 independent populations
B:a test for the difference between the means of 2 related populations
C:a test for the difference between the means of 2 independent populations
D:All of the above
答案: 【All of the above】
7、问题:The test for the equality of two population variances is based on the
选项：
A:ratio of the two sample variances
B:difference between the two sample variances
C:difference between the two population variances
D:difference between the sample variances divided by the difference between the sample means
答案: 【ratio of the two sample variances】
8、问题:image.png
选项：
A:zero.
B:-0.5.
C:0.5
D:one.
答案: 【0.5】
9、问题:image.png
选项：
A:t distribution with 73 degrees of freedom
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