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The probability density function p(x)

Joint probability density function is: x + y where 0<x<1 and 0<y<1 (0 elsewhere)Find variance of (30x + 25y) Answer is 11.48 ---
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2. asked by Sean
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I need help calculating a c value such that f(x,y) is a probability density function. What makes a function a probability
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2. asked by quentin
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Suppose that a random variable Y has a probability density function given byf(y) = ( ky 3 e y=2 ; y > 0 0; elsewhere: Find the
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2. asked by Anonymous
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Let the joint density function of the random variables X and Y bef(X,Y)(x,y)= 2xe^(x(^2)-y) for 0<x<1 , y>x^2 0 otherwise (a)
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2. asked by Ethan
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Below you are given a probability density function (pdf) or a probability mass function (pmf) \pi (\theta ) of a random variable
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The lifetime X of a bulb is a random variable with the probability density function:f(x)=6[0.25-(x-1.5)^2] when 1<=x<=2 0
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2. asked by rupesh painkra
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What is the probability density at the fifth carbon atom if the electron is in the n=2 energy level?I have the formula as
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2. asked by Student
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what is probability density function ? how do i use it?
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2. asked by jaylon
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What is the probability density function (pdf) of the given random variable X?
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2. asked by Mac Daniels
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The random variable X has probability density function f(x)={ax+bx2 , 0<x<1 . If E(X)=0.6 , find (a)P(X<1/2) and (b)var(x)
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2. asked by Lenin
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