that would mean that 2P =1 so P=1/2
It's a ridiculous statement..
What you need to understand is:
P(it happens) + P (it doesn't happen) =1 by definitionP(It is raining) = 1 - P(It is raining) true or false question?
false
P(It is raining) = 1 - P(It is NOT raining)
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