# Probability - bionomial distribution homework?

Update:
In a certain population, 15% of the people have Rh-negative blood. A blood bank serving this population receives 100 blood donors on a particular day.
a) Let X be the number of donors in the sample with Rh-negative blood. What is the exact distribution of X?
So I get that this is a binomial distribution. But I...
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In a certain population, 15% of the people have Rh-negative blood. A blood bank serving this population receives 100 blood donors on a particular day.

a) Let X be the number of donors in the sample with Rh-negative blood. What is the exact distribution of X?

So I get that this is a binomial distribution. But I don't understand what the question means when it asks what is the exact distribution of X? How would I find the answer to a)?

a) Let X be the number of donors in the sample with Rh-negative blood. What is the exact distribution of X?

So I get that this is a binomial distribution. But I don't understand what the question means when it asks what is the exact distribution of X? How would I find the answer to a)?

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