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(1 point) An instructor gives his class a set of 20 problems with the information that...

(1 point) An instructor gives his class a set of 20 problems with the information that the next quiz will consist of a random selection of 6 of them. If a student has figured out how to do 7 of the problems, what is the probability he or she will answer correctly (a) all 6 problems? 000 (b) at least 5 problems? Answer: 4 decimals

Previously tried answers were: 0.0002 and 0.0072 (both incorrect)

Math   Statistics-And-Probability   
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