第29题: [单项选择]统计假设中的单侧检验是指( )。 A. 检验的临界值位于抽样分布的一侧 B. 检验的临界值位于抽样分布的两侧 C. 在抽样分布的单侧小概率事件容易发生 D. 在抽样分布的两侧小概率事件容易发生 参考答案:A 答案解析:本题旨在考查单侧检验。单侧检验就是将与α对应的拒绝域全部放置在左侧或右侧,也就是临界值在左侧或者右侧。小概率事件与方向无关。
第35题: [单项选择]{{B}} Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. Public Buses are fast and cheap transportation tools. B. Parking is becoming a big problem. C. Subway trains are even safer than taxies. D. Taxies are more convenient than buses. 参考答案:B 答案解析:[听力原文]
M: Many people prefer taking buses or the subway or even taxies because parking is getting t