Use probability to make fair decisions, such as lotteries or random selection.
Compute participant probabilities and classify a selection method's fairness
Problem
Compute each student’s probability under the one-slip-per-student draw and compare all \(20\) probabilities to the equal-chance fairness criterion.
Big Picture
What this problem is really about
Randomness alone does not establish fairness; the participant probabilities must be compared. We’ll map slips to students, find the probability of each equally likely slip, transfer that probability through the one-to-one assignment, and test whether every participant receives the same share of the total probability.
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