Answer to: Find the expected value of the random variable. (Round to three decimal places as needed.) x 9 15 29 P(X = x) 0.32 0.52 0.16 By...
Random Variable X has the pdf f(x) = \frac{x^{2{18} \ if \ -3<x<3 0 Otherwise a) Find the expected value of X b) Find the standard deviation of X. X is a continuous random variable with p.d.f. f(x) = {2 (1 - ...
结果一 题目 The random variable X has probability density functionf(x)=ae^(-axt);0.0≤xotherwise.Find the median value of X. 答案 ln2 相关推荐 1The random variable X has probability density functionf(x)=ae^(-axt);0.0≤xotherwise.Find the median value of X....
百度试题 结果1 题目 The random variable X~ N(30, 52). Find the value of a, to 2 decimal places, such that:P(Xa)=0.4 相关知识点: 试题来源: 解析 31.27 反馈 收藏
c. For this probability distribution,find the expected value E(X) . d. For this probability distribution find the variance Var(X). e. For this probability distribution find the Sd(X). 试题详情 3.Suppose that the random variable X has the probability distribution given in the following table...
suppose that Z represent a standard( tabled) normal random variable.find the P(Z2.25) 相关知识点: 试题来源: 解析 由题意,随机变量Z服从标准正态分布, 因此P(Z<-2.25 or Z>2.25)=1-P(-2.25 一般地,计算此概率,需查标准正态分布表,查得P(Z<2.25)=0.9878; 于是P(Z<-2.25 or Z>2.25)=2[1...
x $0 1 2 3 4 f(x) 0.41 0.37 0.16 0.05 0.01 (a) Plot the probability function. (b) Find the expected number of imperfections, E(X) = ?. (c) Find E(X2).Discrete Random Variables:Let {eq}X {/eq} be a discrete random ...
【题目】The random variable X has the following distribution:x01P(X =x)Find E(X) and Var(X).A random sample X1, X2, X3, i taken from the distribution in order to estimate p. 相关知识点: 试题来源: 解析 【解析】E(X 反馈 收藏 ...
百度试题 结果1 题目The random variable X has E(X) = 3 and E(X2) = 10. Find:Var(X) 相关知识点: 试题来源: 解析 1 反馈 收藏
51K In this lesson, learn what a moment-generating function is and how to use it to find the expected value of a function. See moment generating function properties. Related to this QuestionSuppose that the continuous ra...