life lengths of two transistors in an ele uit is a random vector Y ) where X is the life length of transist he life length of sistor 2. The joint probability density fu Y ) is given by 2e-(x+2y) X 20, y 20 Xx,v)= else n the probability that the first transisto st half hour given that the second one la = hour equals ect one: a. 0.3669 b. 0.3935 c. 0.7772 d. 0.6318 e. 0.606
life lengths of two transistors in an ele uit is a random vector Y ) where X is the life length of transist he life length of sistor 2. The joint probability density fu Y ) is given by 2e-(x+2y) X 20, y 20 Xx,v)= else n the probability that the first transisto st half hour given that the second one la = hour equals ect one: a. 0.3669 b. 0.3935 c. 0.7772 d. 0.6318 e. 0.606
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
Problem 29CR
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Transcribed Image Text:The life lengths of two transistors in an electronic
circuit is a random vector
(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+2y)
x 2 0, y 20
fx,y(x,y) =
fx.MX.v)
else
Then the probability that the first transistor last for at
least half hour given that the second one lasts at least
half hour equals
Select one:
a. 0.3669
b. 0.3935
c. 0.7772
d. 0.6318
e. 0.606
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