Which is correct in the above case?
A. women and men are dependent samples.
B. women and men are independent samples.
C. women and men are matched samples.
D. the observations are paired.
查看答案
The correct value of the test statistic is
A. 2.02
B. - 2.91
C. 0.458
D. 4.02
At α =0 .05, which is correct?
A. we reject the null hypothesis.
B. we fail to reject the null hypothesis.
C. we can conclude that women take a higher average number of hours of personal timeper year compared to men.
D. Both A and C.
1.音程中上方的音称为：
A. 根音
B. 冠音
C. 低音
D. 高音
2.音程中下方的音称为：
A. 根音
B. 冠音
C. 高音
D. 中音
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