- #1
kjartan
- 15
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1. Suppose that two electronic components in the guidance system for a missile operate independently and that each has a length of life governed by the exponential distribution with mean 1 (with measurements in hundreds of hours).
(a) Find the probability density function for the average length of life of the two components.
(b) Find the mean and variance.
2. f(y) = e^(-y) for y>=0
For (a), I obtained, f(u) = u*exp(-u) for u>=0. Still an exponential distribution.
The back of the text had f(u) = 4u*exp(-2u), where f has a gamma distribution with α=2, β=1/2.
Thanks for any and all help!
(a) Find the probability density function for the average length of life of the two components.
(b) Find the mean and variance.
2. f(y) = e^(-y) for y>=0
For (a), I obtained, f(u) = u*exp(-u) for u>=0. Still an exponential distribution.
The back of the text had f(u) = 4u*exp(-2u), where f has a gamma distribution with α=2, β=1/2.
Thanks for any and all help!