The number of different mathematics courses at community colleges has a Poisson Distribution with a mean of 20 courses per college.
*show your basic keystrokes and round your answer to 4 decimal places.
Someone on this site already answered this question, but I don't understand what they did, how they got the number 40 for this problem to solve it. Can you help me understand this please? I also didn't know if this was poissoncdf or poissonpdf.
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