Mathematics, 04.08.2019 09:00, bcox32314

Can someone me with this statistics question? in a study of helicopter usage and patient survival, among the 52,808 patients transported by helicopter, 248 of them left the treatment center against medical advice, and the other 52,560 did not leave against medical advice. if 40 of the subjects transported by helicopter are randomly selected without replacement, what is the probability that none of them left the treatment center against medical advice?

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Can someone me with this statistics question? in a study of helicopter usage and patient surviva...