Math Problem Statement
设随机变量X~U(0,3),随机变量Y~P(2),且X与Y的协方差1,求D(2X-Y+1)
Solution
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Random Variables
Variance
Covariance
Uniform Distribution
Poisson Distribution
Formulas
D(2X - Y + 1) = D(2X) + D(Y) - 2 * Cov(2X, Y)
D(aX) = a^2 * D(X)
D(X) = (b - a)^2 / 12 for X ~ U(a, b)
Cov(aX, Y) = a * Cov(X, Y)
Theorems
Properties of Variance and Covariance
Variance of Uniform Distribution
Variance of Poisson Distribution
Suitable Grade Level
University Level (Undergraduate)
Related Recommendation
Discrete Random Variable with Minimum Variance and Valid PMF
Find the Mean and Variance of Y in a Linear Equation Y = 2.4 + 8.2X
Derive Mean, Variance, MGF, and CDF for Uniform Distribution
Derive Mean, Variance, MGF, and CDF for Uniform Distribution
Calculate Covariance and Correlation Coefficient: Detailed Solution