统计概念问题 ,If X follows a normal distribution with μ=30 ,σ=5 ,then P(X=40)?a. 0.0108 b.0 c. 0.4772 d. 0.5 e.none of the abovethe location of a nomal curve is determined by a.mean b.rang

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统计概念问题 ,If X follows a normal distribution with μ=30 ,σ=5 ,then P(X=40)?a. 0.0108 b.0 c. 0.4772 d. 0.5 e.none of the abovethe location of a nomal curve is determined by a.mean b.rang
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统计概念问题 ,If X follows a normal distribution with μ=30 ,σ=5 ,then P(X=40)?a. 0.0108 b.0 c. 0.4772 d. 0.5 e.none of the abovethe location of a nomal curve is determined by a.mean b.rang
统计概念问题 ,
If X follows a normal distribution with μ=30 ,σ=5 ,then P(X=40)?
a.  0.0108                    b.0           c.  0.4772              d.  0.5    e.none of the above
the location of a nomal curve is determined by
a.mean       b.range          c.standard deviation      d.variance       e.none of a above
the shape of a nomal curve is determined by
   a.mean         b.range          c.standard deviation         d.mode         e.none of a above
4.which one of the following distributions is a special case of Gamma distribution
 a.exponential         b.uniform             c.chi-square          d.both(A)and (B)         e.both (A)and (C)
5.the number of collisions at sea in year is Possion distributed.THus,the length of time between collisions follow:
a.  a Poisson distribution       b.a nomal distribution         c.an exponential distribution      d.a Bernoulli distribution         e.none of the above

统计概念问题 ,If X follows a normal distribution with μ=30 ,σ=5 ,then P(X=40)?a. 0.0108 b.0 c. 0.4772 d. 0.5 e.none of the abovethe location of a nomal curve is determined by a.mean b.rang
e,a,c,c,a

统计概念问题 ,If X follows a normal distribution with μ=30 ,σ=5 ,then P(X=40)?a. 0.0108 b.0 c. 0.4772 d. 0.5 e.none of the abovethe location of a nomal curve is determined by a.mean b.rang follows 什么是 sps统计 概念? 统计与概率的概念 概率统计概念计算题 人口质量统计指标的概念 如何理解熵的概念?其统计物理意义又为何?热力学第三定律能说明什么问题? if语句和else配对问题if(x 帮下忙!数学统计问题! 大学概率统计问题 高中英语问题（虚拟语气）If he ____our advice ,he wouldn't be in that terrible situation A.follows B.could follow C.had followed D.has follows我知道答案,但我选的A,主句是would+do原,前面应与过去或将来相反啊,为什么 沪教版九年级数学统计全部概念 小学统计与可能性的概念. 概率统计概念题,求问为什么? 什么是统计整理的概念和内容 统计里的环比概念? 什么是统计整理的概念和内容 What day follows the day before yesterday if two days from now it will be monday