NO.PZ2015120604000115
问题如下:
The mean of a sample is 15 and its standard deviation is 2.5.The size of the sample is 64. The standard error of this sample should be:
选项:
A.0.02.
B.0.31.
C.4.00.
解释:
B is correct.
老师想问下,在考试过程中,考到关于Standard Error这种题的时候,会能直接看出来是求sample的吗?还是需要自己判断。做题时会给出类似size 是多少,或者最后题目中会问道求standard error吗?