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Mathematics, 10.03.2020 17:36 Adones7621

A college student is employed as a door-to-door newspaper salesman. Historical data suggests that the student sells a subscription to 10% of the homes he visits. Suppose the student begins going door-to-door at some point in time. Given that 10 subscriptions are sold at the first 20 homes, what is the expected value of the number of subscriptions sold at the first 40 homes?

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