Suppose that the number of inquiries arriving at a certain interactive system follows a poisson distribution with arrival rate of 12 inquiries per minute. Find the probability of 10 inquiries arriving (a) in a 1-minute interval, (b) in a 3-minute interval, (c) what is the expectation and variance of the number of arrivals during each of these intervals?
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xkkcepepepnnWhat does the sun contain over the total mass of the solar system?
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