Write a story that could represent this math problem.
2 answers:
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This is an example of a random variable that follows Bernoulli distribution.
Whenever you perform experiments, with probability
of success, the provability of havin
successes is
In this case, you have (you choose a sample of 3 candidates),
(30% of candidates have a degree in economics) and we want
to be at least one.
One way to solve this is to consider that
But it is much quicker to observe that
And we have
So, the probability that at least one of them has a degree in economics is