Mathematics, 01.08.2019 00:30 queenpanda365

The future lifetimes (in months) of two components of a machine have the following joint density function: 6 (50 ) for 0 50 50 (, ) 125,000 0 otherwise. xy x y f xy ⎧ ⎪ − − < < −< = ⎨ ⎪ ⎩ what is the probability that both components are still functioning 20 months from now?

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