【判断题】In western countries, people don't always say thank you to other people.( )
【单选题】关于假设检验,下面哪一项说法是正确的:
C.
采用配对t检验还是两样本t检验是由实验设计方案决定的
【单选题】关于假设检验,下面哪一项说法是正确的:
A.
采用配对t检验还是两样本t检验是由实验设计方案决定的
【单选题】关于假设检验,下面哪一项说法是正确的:
B.
采用配对t检验还是两样本t检验是由实验设计方案决定的
【简答题】A.There are too many students in the discussion. B.Some people don't let other people talk. C.Questions to discuss are too easy. D.She doesn't have time to prepare the discussion.
【简答题】In Britain, people couldn't decide
【简答题】On________ (平均),people who don’t smoke are healthier than people who do.
【单选题】—Won’t people work in the future? —__________. Robots will only do some of the work for people.