In 3 billion repetitions of an experiment, a random event occurred in 500 million cases.
2 answers:
<h2>Answer:</h2>
The expected probability of the complement of the event is:
We know that for any event A and the complement of the event i.e. the sum of the probabilities of both the events is equal to 1.
i.e. if P denote the probability of an event then we have:
Here we have the probability of event A as:
Hence,
Hence, the answer is:
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