NO.PZ2015120604000179
问题如下：
If there is a distribution X which meets the condition that ln(X) is a normal distribution, which of the following statement is most accurate?
选项：
A.X is a positively skewed distribution.
B.X is a negatively skewed distribution.
C.X is the binomial distribution .
解释：
A is correct.
If ln(X) is normal, then X is lognormal.
如果一个随机变量服从LOGNORM分布，那么这个变量的对数就服从NORM分布，这个解释，，，，，因为lognorm的取值不能小于0所以是possitive？？？选A？？
