【单选题】About Type-II error, which one is wrong ?
A.
The probability of a Type-II error is denoted by β.
B.
A Type-II error is committed when Ho is accepted while H0 is false.
C.
A Type-II error is committed when H1 is accepted while H0 is true.
D.
The value of β can be calculated only when we happen to know the true value of the population parameter being tested.
【判断题】海关通道分为“红色通道”和“绿色通道”两种。不明海关规定或不知如何选择通道的旅客, 应选择红色通道通关。
【单选题】Which one is wrong according to what you have learned?
【简答题】Remember that a topic sentence is a complete sentence and is neither too general nor too specific. Step 1 Read the sentences in each group, and decide which sentence is the best topic sentence. Write ...
【单选题】在长度为10的线段上任取一点x作为圆心,再任取一点y,以 |y-x| 为半径画圆,则圆的面积超过25π的概率为( )。
【单选题】Which one is wrong according to what you have learned?
【单选题】When writing a detail paragraphs of complex graphs, which one is wrong statement?
A.
You have to show the diversity of sentences
B.
You have to write main features of different types of graphs
C.
You need to have synonyms to replace the words or phrases on the graphs
D.
You don’t have to follow certain orders when you write detail paragraphs of task 1
【单选题】Which one is wrong in the writing of English dates?
【判断题】海关通道分为红色通道和绿色通道两种不明海关规定或不知何处选择通道的旅客应选择红色通道通关。
【判断题】量子计算机是一类遵循量子力学规律进行高速算术和逻辑运算、存储及处理量子信息的计算装置。