题目
Which of the following statements about probability distributions is least accurate?
选项
A.A probability distribution is, by definition, normally distributed.
B.One of the key properties of a probability function is 0 \u2264 p \u2264 1.
C.A probability distribution includes a listing of all the possible outcomes of an experiment.
D.In a binomial distribution each observation has only two possible outcomes that are mutually exclusive.
答案
A
解析
Probabilities must be zero or positive, but a probability distribution is not necessarily normally distributed. Binomial distributions are either successes or failures.概率必须为零或正，但是概率分布不一定是正态分布。 二项式分布只有成功或者失败两种结果。