4. Suppose (X, Y) has joint p.d.f. fx,x(s, t) = le-sμe-μt (a) Compute the marginal p.d.f. of X (b) Compute the marginal p.d.f. of Y (c) Are X and Y independent? for s, t≥ 0.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 91E
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4. Suppose (X,Y) has joint p.d.f.
-λs
fx,y(s, t) = Ae¯ ме-н
(a) Compute the marginal p.d.f. of X
(b) Compute the marginal p.d.f. of Y
(c) Are X and Y independent?
(d) Compute P{Y = X}.
(e) Compute P{Y > X}.
(f) Compute P{Y > X + u}.
(g) Compute P{Y > X+u | Y > X}.
for s, t≥ 0.
Transcribed Image Text:4. Suppose (X,Y) has joint p.d.f. -λs fx,y(s, t) = Ae¯ ме-н (a) Compute the marginal p.d.f. of X (b) Compute the marginal p.d.f. of Y (c) Are X and Y independent? (d) Compute P{Y = X}. (e) Compute P{Y > X}. (f) Compute P{Y > X + u}. (g) Compute P{Y > X+u | Y > X}. for s, t≥ 0.
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