二项式分布If x is a normal random variable with mean 80 and stand

二项式分布If x is a normal random variable with mean 80 and stand Question 4 Let X be a normal random variable with a mean of random variable X is normally distributed,with a mean of 25 X is a random variable with E(x) = 1.5 and σ = 0.8 E(7-4X+2X Let X be a Binomial random variable with parameters n and 0 求一道概率题?what is the probability that a normal random variable GRE数学正态分布A random variable Y is normally distributed with a 统计学,英文,A random variable X is given such that X ∼ N(82 英语翻译whereχ2pis a standard chi-square random variable with pd 1.expected value of a discrete random variable X(离散随机变量的预期值) [A trinomial has only one variable x and its degree is 2]意思是 bernoulli random variable是什么意思