Question: When users connect to a server, the lengths of time in minutes that they are connected are independently distributed with a Weibull distribution with

When users connect to a server, the lengths of time in minutes that they are connected are independently distributed with a Weibull with λ = 0.03 and a = 0.8.
(a) Suppose that 5 users connect to the server. What is the probability that 2 of the users are connected for a time less than 30 minutes and that 3 of the users are connected for a time greater than 30 minutes?
(b) Suppose that 500 users connect to the server. What is the probability that no more than 210 of the users are connected for a time greater than 30 minutes?

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