How many languages do the people in India speak
A. [A] One.
B. [B] Two.
C. [C] About 180.
The farmer went out to work.
A. [A] Right.
B. [B] Wrong.
C. [C] Doesn' t say.
One shoe has a thicker sole than that of the other.
A. [A] Right.
B. [B] Wrong.
C. [C] Doesn' t say.
欲比较某药三个不同剂量水平对某病的疗效，宜选用的假设检验方法是
A. 四格表资料的X2检验
B. 成组资料的t检验
C. 行X列表资料的X2检验
D. 秩和检验
E. 方差分析
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