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Keyboard: 1–4 pick • E = Explain • R = Sim 500
Conditional Detective NEW
Read a 2×2 contingency table to find marginals, intersections, unions, and conditional probabilities.
Ad 728×90
B B′ Total
A 18 31 49
A′ 42 24 66
Total 60 55 115
What is P(A)?
Probability = favourable ÷ total. For conditionals divide by the given condition’s total (row/column).
Simulation samples people from the table (or from the condition-set for conditionals).
Event hits
Total trials
Round: 1/10
Score: 0
Best: 0
Timer: —