The duration of a light bulb before it burns out follows an exponential distribution averaging 8 months. You are asked: 1) Calculate the probability that a randomly selected bulb has a life of between 3 and 12 months. 2) Calculate the probability that a light bulb, which has lasted more than 10 months, will last more than 25 months.

The bulb will last less than 800 hours is 0.550

Step-by-step explanation:

Values for an exponential random variable occur in the following way. ... On average, how long would five computer parts last if they are used one ... Suppose that the longevity of a light bulb is exponential with a mean lifetime of eight years. If a bulb has already lasted 12 years, find the probability that it will last a total of ...

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