An event A has probability 0.5. That means A is equally likely to occur or:
ATo repeat twice
BTo be certain
CTo be impossible
DNot to occur
Answer & Solution
Correct answer: D. Not to occur
1. The two possibilities carry equal weight.
2. Half the probability sits on each side.
3. So A is equally likely to occur or not to occur.
_Source: OpenStax Introductory Statistics 2e, Chapter 3, Probability Topics._
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