P(X+ Y< 1) =

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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The life length of two transistors in an electronic circuit is a random variable (X,Y), where X is the
life length of transistor 1 and Y is the life length of transistor 2.The joint probability density
function of (X,Y) is given by
2e-(x+2) x 20,y20
fx,y(x,v) =-
otherwise
Then P(X+ Y< 1) =
Select one:
a.
1
1
I| 2e-(x+2)dxdy
b.
.1
2e-(x + 2)dxdy
1-y
.1
1-y
(T '2e-(x+2)dxdy
d.
[| 2e-(x+2)dxdy
Transcribed Image Text:The life length of two transistors in an electronic circuit is a random variable (X,Y), where X is the life length of transistor 1 and Y is the life length of transistor 2.The joint probability density function of (X,Y) is given by 2e-(x+2) x 20,y20 fx,y(x,v) =- otherwise Then P(X+ Y< 1) = Select one: a. 1 1 I| 2e-(x+2)dxdy b. .1 2e-(x + 2)dxdy 1-y .1 1-y (T '2e-(x+2)dxdy d. [| 2e-(x+2)dxdy
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