Suppose that the logons to a computer network follow a Poisson process with an average of 5 logons per minute. (a) What is the mean time between logons (in minutes)? (Round your answers to 3 decimal places.) (b) What is the standard deviation between logons (in minutes)? (Round your answers to 3 decimal places.) (c) Let X denote the time between two logons. If it is an average of 3 logons per minute, find the value of x such that P(X

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