Please help me don't do handwritten please explain concept and stepwise, i will definitely like the answer. The lifetime of a transistor is exponentially distributed. The probability that the lifetime is greater than 5 years is 0.8.  NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.  What is the probability that the lifetime is greater than 15 years?  Probability =.

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