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Mathematics, 06.04.2021 01:00 001035783

The number of students who enroll in a psychology course is a Poisson rv with mean 100. The professor has decided that if the number of students that enroll is 120 or more, he will teach the course in 2 sections, and if not, he will teach one large section with all the students together. What is the chance that he will have to teach 2 sections

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