axiom


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axiom - A statement accepted as true without proof. an unprovable rule or first principle accepted as true because it is self-evident or particularly usefu

If the probability of rain is 15%, what is the probability that it won't rain?
If the probability of rain is 15%, what is the probability that it won't rain? If we assign the probability of raining as event A, then A' (A complement) is the probability it won't rain. Since it either rains or doesn't rain are the only two events. There exists an axiom in statistics that states: P(A) + P(A') = 1 Rearranging this, we get: P(A') = 1 - P(A) If we assign the probability of raining as event A which is 0.15, we get: P(A') = 1 - 0.15 P(A') = [B]0.85[/B]