题目内容

The correct value of the test statistic is

A. 2.02
B. - 2.91
C. 0.458
D. 4.02

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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

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