皮皮学，免费搜题
登录
搜题
【单选题】
对容量分别为26、24、28和27的4个独立样本采用Kruskal-Wallis检验,在原假设成立的条件下,检验统计量H服从自由度为 ( ) 。A.
3的卡方分布
B.
4的卡方分布
C.
101的T分布
D.
102的T分布
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】When I came back,I noticed that he was still sitting in the office.He seemed_________ for someone.
A.
waited
B.
to have waited
C.
to be waiting
D.
to wait
【单选题】--- Were you at school when he came to see you ? ---- Yes, I __________ a math class .
A.
had
B.
was having
C.
am having