The correct value of the test statistic is
A. 2.02
B. - 2.91
C. 0.458
D. 4.02
查看答案
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
3.两个音先后鸣响,叫做:
A. 自然音程
B. 单音程
C. 和声音程
D. 旋律音程