Suppose f(x)=3x2, 0

Q: Suppose Z = X+Y. Give the probability density value at z = 0, fz(0). fx(x) fy(y) 1/2 1/2 -2 -1 y

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Q: Suppose X has density, Find EX 2x for 0≤x≤1 f(x)= 2 Lo otherwise WIN 3

A: Solution

Q: If the probability density of X is given by f(x)= 6x(1–x) 0<x<1 Find the probability density…

A: We know,  For any given density function. ∫-∞∞fx dx =1 Therefore, ∫016x1-x dx = 1 Let  y…

Q: Obtain the generating functions using the composition method of the following density functions f(x)…

A: The moment generating function is, MX(t)=E(etx) The characteristic function is, φX(t)=E(eitx) The…

Q: Let X and Y have the joint density function 16x²y. fx,y)= 0, 6x3y, 0<x<1, 0 <y<1, Otherwise.

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Q: 3. The density function of X is given by f(2) = {"* + bx? 0sxs 1 otherwise If E[X] = ; find a and b.

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Q: Let X and Y have the joint density function 6x y, 0<x<1,0<y<1, (0, f(x.y)= Otherwise.

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Q: Find the mass of the one-dimensional object. A wire that is 11 ft long (starting at x =0) and has a…

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Q: If f(xy)=k(y-2x) is a joint density function over Ocxx?, then what is the value of the constant k?…

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Q: 6. If the density function of X is known, the density function of Y = g(X) can be found from the CF…

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Q: Suppose fz(z) is a function given by So23 – 2) if -<<0 fz(2) = otherwise for a fixed constant c. Can…

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Q: Suppose X has density, find EX* f(x) = Lo 2x for 0≤x≤1 otherwise O 1/2 O 3/4 O 2/3 Does not exist

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Q: 9. Find the mass of a car antenna that is 3 ft long (starting at x = 0 and has a density function of…

A: 9. Given that a car antenna that is 3 ft long (starting at x=0) and has density function p(x)=3x+2…

Q: Find the density of Y = 1 – e-AX when X ~ Exp(1). Note that the density of de-dz if x > 0, f(x) =…

A: From the given information, fx=λe-λx, x&gt;0 Given that Y=1-e-λx. Consider,…

Q: I was calculating a conditional density function and I got an answer of 2x+3y all over 2x+3/2.  When…

A: Introduction: The conditional density of X given Y is the joint density, f (x, y), divided by the…

Q: Show that the gamma density function with parameters a> 1 and A >0 has a relative maximum at…

A: We have given that  To determine relative maximum we differentiate the given pdf and equat to zero.

Q: 1. Let f(x, y) = where C is a constant. (x2 + 1)(y² + 1) ’ For which value of C is ƒ a joint density…

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Q: Let X and Y denote the lengths of life, in years of two components in an electronic system. If the…

A: Given :f(x,y)=e-(x+y), x&gt;0, y&gt;0We will need to find the marginal density of the random…

Q: 1. Show that the density function f(x; a, B) has a relative maximum at x = a-1 a+B-2'

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Q: If f(x) is density function then f(x)<0.

A: Given f(x) , a density function we need to find if given statement is true / false

Q: Define the density function of X by f(x)=2 for x 1,2,3... and f(x)=0 otherwise. Find the moment…

A: Var(X)=E(X2)-(E(X))2

Q: If X has density f (x) = 1 – |æ| for |æ| < 1 then Var (X) =

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Q: A

A: Given: p(x) = x^2+5x

Q: E{g(X)} = [ | g(x) f. (x) dx, where f. (x) is the marginal density of X.

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Q: Let and Y have the joint density function 2, 0<x<1; 0 <y<x, f(x,y)= 0, Otherwise. Calculate E(XY).

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Q: Find a constant b > 0 so that the function e3x Sx (x) = { 4 0 < X<b elsewhere is valid density…

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Q: Q3- If the density function of X is (2x (x) = 0 < x < 3 %3D 0. w Find the probability mass function…

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Q: For variables X and Y which have joint density function given by: cy, 0<x< y < 2 0, fx,y(x, y) =…

A: Given f(x,y)=12xy,0≤x≤y≤2 (a) f(y)=∫0yf(x,y)dx      =∫0y12xydx     =12yx220y     =14y3…

Q: If X has density ƒ (x) = (x+1)² for | x| < 1 then E (X) =; and Var (X) =

A: if X has density f(x)=38(x+1)2 for x&lt;1 then  E(X)=12 Find Var(X)=?

Q: Suppose that X and Y have a joint density function given by e-(a+y)r,y> 0, otherwise f(x, y) (a)…

A: From the provided information, the joint density function is,

Q: Find the mass of the thin bar with the given density function. P(x) =x/14-x; for 0sxs3

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Q: Suppose X and Y have joint density f(x, y) = x + y 0 < x < 1,0 < y< 1. What is E(XY?)

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Q: Let X and Y have the joint density function 0<x<1; 0<y<x, 2, f(x,y)= 0, Otherwise. Calculate E(XY).

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Q: If the joint density function of X and Y Is given Sk(x+2y), 0 <x< 1;1<y<2 0, elsewhere f(x,y) = a.…

A: From the given information, fx,y=kx+2y, 0&lt;x&lt;1, 1&lt;y&lt;2 The value of k is obtained below:…

Q: 3y, 0sysys1, Suppose that the joint density function for Y, and Y, is given by f(y,,Y2)={ Otherwise.…

A: Introduction: The joint density function for Y1 and Y2 is given by,

Q: as the density function p(x 0.5X

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Q: 9. Find the mass of a car antenna that is 3 ft long (starting at x = 0) and has a density function…

A: Given that a car antenna is 3 ft long (starting at x=0) and has a density function of ρ(x)=3x+2…

Q: 3. (a) Find the mass of a thin wire shaped in the form of the semicircle y = v9 – x²2 if the density…

A: The given problem is to find the mass of thin wire placed in the shape of semi circle with given…

Q: elsewhere If Y = X be a function of X, find the density function of Y using method of distribution…

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Q: Find the value of C so that the function is a density function. f(x) = [Cx¹ if 0≤x≤ 9 10 otherwise

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Q: The joint density function for x, y is given by kxy for 0<x <ys6 f(x, y) = otherwise. Determine the…

A: K=?

Q: Suppose you choose a real number X from the interval [2, 10] with a density function of the form…

A: Part (a)   Here the given function is f(x) = C x   Where C is a constant.  Find the constant…

Q: Find c. b. Find the cdf. c. What is P(.1≤ X <.5)

A: Using the property of density function,

Q: Suppose X has the density f (x) = (2 – x)² for 0 < x < 5.

A: Given that fx=3352-x2 0&lt;x&lt;5

Q: 1. Compute E[X] and Var(X) if X has a density function given by Gxe-x/2 x > 0 (0, otherwise a. f(x)…

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Q: Find the mass of the thin bar with the given density function. 2 p(x)=x√ 16-x; for 0≤x≤3

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Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!