问题
单项选择题
An analyst stated that the mean of the standard normal distribution always has a value of zero but that the standard deviation of the standard normal distribution can take on a value from 0 to 1. 0. Is the analyst correct with respect to the value of the standard normal distribution’s:mean Standard deviation ①A. No No ②B. No Yes ③C. Yes No A．① B．② C．③
答案
参考答案：C
解析：The standard normal distribution is a normal distribution that has been "normalized" so that it has a mean of zero and a standard deviation of one.