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A panel comprised of 15 people is being selected from a group of 10 biologists and 10 chemists. a) What is the probability that the

A panel comprised of 15 people is being selected from a group of 10 biologists and 10 chemists. a) What is the probability that the panel will have 8 biologists and 7 chemists?

b) What is the expected number of chemists on the panel?

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