Probability of x failing before y

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SUMMARY

The discussion revolves around calculating the probability that component X fails before component Y, given their independent failure densities: f(x) = exp(-x) for X and f(y) = 2*exp(-2y) for Y. The user attempts to derive the probability by integrating the failure densities over time T but encounters difficulties in completing the calculations. The correct approach involves evaluating the integrals for both components and applying the independence of their failure events to find the desired probability.

PREREQUISITES
  • Understanding of probability density functions (PDFs)
  • Knowledge of independent random variables
  • Familiarity with integration techniques in calculus
  • Basic concepts of exponential distributions
NEXT STEPS
  • Study the properties of exponential distributions and their applications in reliability engineering
  • Learn about the concept of independent events in probability theory
  • Practice solving problems involving integration of probability density functions
  • Explore the use of cumulative distribution functions (CDFs) in determining failure probabilities
USEFUL FOR

Students studying probability theory, engineers working with reliability analysis, and anyone interested in understanding the failure rates of independent components.

tony3333
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Homework Statement



hi,
i have a problem and i really want you to help me with it.
we have X and Y that fail independently of each other.
density of X : f(x)=exp(-x), and density of Y : f(y)=2*exp(-2y) what is the probability that X component fails first?
(it should be a number)
thank you
 
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You need to show some work. What have you tried?
 
so, i think, i need the probability of X failing and Y not, at a time T.
T T T oo
so it is Pr=∫f(x)dx *(1-∫f(y)dy)=∫2*exp(-2t)dt * ∫2*exp(-2t)dt=
0 0 0 T
and here i am stuck...


(the limits of the first integral are (0,T), second (0,T), third (0,T), and forth (T, +oo)
 

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