A Web site is operated by four identical computer servers. Only one is used to operate
Chapter 3, Problem 3-112(choose chapter or problem)
A Web site is operated by four identical computer servers. Only one is used to operate the site; the others are spares that can be activated in case the active server fails. The probability that a request to the Web site generates a failure in the active server is 0.0001. Assume that each request is an independent trial. What is the mean time until failure of all four computers?
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