Question: show work please The time between failures for an electrical appliance is exponentially distributed with a mean of 30 months. What is the probability that

show work please

The time between failures for an electrical appliance is exponentially distributed with a mean of 30 months. What is the probability that the next failure will not occur before 25 months have elapsed? A not in excess of 2 B. in excess of 2 but not in excess of 3 C. in excess of 3 but not in excess of 4 D. in excess of 4 but not in excess of 6 E in excess of 6

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