Var(x)=∫_a^b((x-x)/(b-a))^2dx - =∫_a^b(x-((a+b)/2))^2*1/((b-a))dx = 一。 = 2 = = (b - a)3 = 4 =((b-a)^3)/(12(b-a)) 12 nThis is using the continuous - version of Variance = n You could use E(X2)-(E(X))2 but it i
b. Find the expectation and variance of X. A random variable Y has cdf G_Y (y) = 10y^9 - 9y^{10} on 0 <= y <= 1(a) Calculate the expected value and variance of the random variable Y (b) Calculate E (Y^{-9}). Let F(x...
Suppose a continuous random variable x has the probability density function f(x) given below: f(x)={0x≤02xR20<x<R0otherwise Find the variance of the function. Variance of random variable Variance is a terminology that takes root from the term vary. Regarding data points, it means varia...
AAKASH SERIES-RANDOM VARIABLE -PRACTICE EXERCISE Find the mean and variance of the random variable X which follows the ... 03:59 A random variable X ahs the following distribution {:(x,1,2,3,4),(P... 01:30 X is a random variable with distribution given below {:(x:,0,1,2,3),...
suppose that x is a gaussian random variable with mean 2 and variance 1 ,y=5x find the probability that y is greater than 0 答案 N(2,1)那么X-2~N(0,1)P(Y>0)=P(5X>0)=P(X>0)=P((X-2)>-2)=1-P((X-2)相关推荐 1suppose that x is a gaussian random variable with mean 2...
For a binomial random variable B(n=12, p=0.5), find out the mean and variance. Mean Variance ()①A. 6 3 ②B. 7 3.5 ③C. 8 4 A. ① B. ② C. ③ 相关知识点: 试题来源: 解析 A A binomial random variable has an expected value or mean equal to np and variance equal to...
Var—Finds the variance of all the points in each dwell. This is for numeric fields. Any—Returns a sample string of a point in each dwell. This is for string and numeric fields. First—Returns the first value of a specified field in the summarized track. This is for string and numer...
Continuous variables were expressed as means ± standard deviations (SD) or medians and minimums-maximums according to their distribution, and categorical variables as frequencies and percentages. At each time, means were compared using Kruskal-Wallis analysis of variance test when appropriate. No...
To solve the problem step by step, we will follow the properties of the binomial distribution, using the given mean and variance to find the required probability.Step 1: Understand the properties of the binomial distribution Th
Find V(Y), the variance Suppose that Y has density function f(y) = k(y^2 + y) 1_{(0, 1)}(y). (a) Find the value of k that makes f a probability density function. (b) Approximate, to 2 decimal places, th...