【判断题】抽样极限误差就是最大的抽样误差,因此,总体指标必然落在样本指标和极限误差共同构成的区间之内
【单选题】一名消费者在一家酒楼食用以福寿螺为原料制作的凉拌螺肉后,出现双肩疼痛、颈部僵硬、恶心等症状,其罪魁祸首正是寄生在福寿螺身上的广州管圆线虫,该种情况属于( )
【判断题】极限误差就是最大的抽样误差,因此,总体指标必然落在样本指标和极限误差共同构成的区间之内。
【判断题】极限误差就是最大的抽样误差?因此?总体指标必然落在样本指标和极限误差共同构成的区间之内。
【单选题】听力原文:M: Hey, Amy, where are you off to? W: To the Recreation Center. I've got a physical education class. M: What course are you taking? W: Fencing. M: Oh, really? Is it hard? W: I was in the fencing ...
A.
Go to a meeting of the fencing club.
B.
Watch a fencing match.
D.
Attend a physical education class.
【单选题】Amy: Hi, Talia. Where are you? We are __________________ in class in ten minutes. I thought you were picking me up.