The economic life (in years) of a certain electrically-powered machine is a continuous random variable having the probability density: -x/4.5 for x > 0 f(x)= 4.5 for x <0 Find the probability that the machine will be useful anywhere between 4.3 to 6 years. O 0.103 O 0.274 none of these

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 economic life (in years) of a certain
electrically-powered machine is a continuous
random variable having the probability density:
-x/4.5
4.5
for x > 0
f(x) =
for x <0
Find the probability that the machine will be
useful anywhere between 4.3 to 6 years.
0.103
0.274
none of these
0.316
Transcribed Image Text:The economic life (in years) of a certain electrically-powered machine is a continuous random variable having the probability density: -x/4.5 4.5 for x > 0 f(x) = for x <0 Find the probability that the machine will be useful anywhere between 4.3 to 6 years. 0.103 0.274 none of these 0.316
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