# Independent random variables

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4.19)

The lifetimes of two car batteries (Brand A and B) are independent exponential random variables with means 12 hours and 10 hours, respectively. What is the probability that Brand B battery outlasts Brand A battery?

https://brainmass.com/math/probability/independent-random-variables-23854

#### Solution Summary

This shows how to work with the expected lifetimes of batteries and probability.

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