(a) X and Y are two independent random variables whose probability density functions are given by: f(x) = for x >0 f6) = { 2 for 0< y < 2 %3D 0 elsewhere 0 elsewhere Write down the joint probability density function of X and Y. If U and V are random variables such that U =X+Y, and V =X- Y, obtain the joint probability density function of U and V. Use (i) (ii) result in (ii) to obtain the marginal probability density function of V. (iii) (b) Let X1, X2, Xn be a random sample form a continuous probability distribution with probability density function f(x) and distribution function F(x). Let X (2) denote the r th order statistic. Obtain the probability density functions of X (1) and X (n). your

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(a) X and Y are two independent random variables whose probability density functions are
given by:
Je for x> 0
0 elsewhere
for 0< y< 2
= 5
0 elsewhere
(x) =
f) = { 2
%3!
Write down the joint probability density function of X and Y.
If U and V are random variables such that U = X+ Y, and V = X- Y, obtain the
joint probability density function of U and V.
Use your result in (ii) to obtain the marginal probability density function of V.
(i)
(ii)
(ii)
(b) Let X1, X2, Xn be a random sample form a continuous probability distribution with
probability density function f(x) and distribution function F(x). Let X (e) denote the r th
order statistic. Obtain the probability density functions of X (1) and X (n).
Transcribed Image Text:(a) X and Y are two independent random variables whose probability density functions are given by: Je for x> 0 0 elsewhere for 0< y< 2 = 5 0 elsewhere (x) = f) = { 2 %3! Write down the joint probability density function of X and Y. If U and V are random variables such that U = X+ Y, and V = X- Y, obtain the joint probability density function of U and V. Use your result in (ii) to obtain the marginal probability density function of V. (i) (ii) (ii) (b) Let X1, X2, Xn be a random sample form a continuous probability distribution with probability density function f(x) and distribution function F(x). Let X (e) denote the r th order statistic. Obtain the probability density functions of X (1) and X (n).
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