WebIf the variance of the random variable X is 5, then the variance of the random variable −3X is A 15 B 45 C −45 D 60 Medium Solution Verified by Toppr Correct option is B) We know that σ a+bx2 =b 2σ 2 Here a=0,b=−3 ⇒σ 2 for −3X=9∗5=45 Solve any question of Probability with:- Patterns of problems > Was this answer helpful? 0 0 Similar questions WebFor example, if a random variable x takes the value 1 in 30% of the population, and the value 0 in 70% of the population, but we don't know what n is, then E(x) = .3(1) + .7(0) = .3. No n is necessary if we have a probability mass function like this (or probability distribution function, for continuous random variables).

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Weba(x,y,z) = a1ˆı+a2ˆ +a3kˆ • The divergence of a at any point is defined in Cartesian co-ordinates by div a = ∂a1 ∂x + ∂a2 ∂y + ∂a3 ∂z • The divergence of a vector field is a scalar field. • We can write div as a scalar product with the ∇ vector differential operator: div a ≡ ˆı ∂ ∂x + ˆ ∂ ∂y + ˆk ∂ ∂z WebIn differential calculus we learned that the derivative of ln(x) is 1/x. Integration goes the … holiday inn express raytown mo

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Web1 dag geleden · Related Articles; Find the following products:(i) $(x + 4) (x + 7)$(ii) $(x - … WebGiven 2x+3y+4=0 (1) v (x)=6 v (y)=? Sol. Putting x=6 in (1) 2×6+3y=0 3y=-12 y=-12÷3 y=-4 Therefore v (y)=-4 Sponsored by Beverly Hills MD Top plastic surgeon: How to improve your neck’s appearance. This at home trick can take years off of your neck's appearance. Learn More 1.3K Rory Barrett WebLet X be a continuous random variable with PDF f ( x ) = { K x 3 ( 1 + 2 x ) 6 x > 0 0 O t h e r w i s e , otherwise, where k is the appropriate constant. Find the PDF of the random variable Y defin; When above random variables are given, what are E [X], E [Y], Var (X), Var (Y)? holiday inn express recklinghausen