All students have equal probabilities of being picked (random).
Number of possible successes (picking an A-student) = 24
Size of Ω (sample space)=237
Probability of success = 24/237, a little more than 10%.
Last semester, a certain professor gave 24 As out of 237 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives one grade.)
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