Crux of Probability
Probability
Level
2
What is the probability that it rained yesterday in Chicago?
Either 0 or 1
Cannot Be Determined
0.5
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1 solution
Any past event would, by definition, provide a definite outcome as uncertainty is eliminated upon occurrence of the event under observation. Therefore, if it did rain yesterday, then P ( R a i n ) = 1 . If it did not, then P ( R a i n ) = 0 .