Unformatted text preview: . (b) Find the probability that the lifetime of a lightbulb will be longer than 2000 hours. (c) Given that a lightbulb has been continuously lit for 2000 hours, what is the probability that it will last for at least another 2000 hours? (d) Suppose Simon bought 5 lightbulbs and he knows that their lifetimes are independently distributed. 1. What is the probability that at least one of them will burn out in less than 2000 hours? 2. What is the probability that more than two will burn out in less than 2000 hours? 1...
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 '07
 HONG
 probability density function, Cumulative distribution function, Simon Kwok

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