In a Certain Population, 18% of the People Have Rh-Negative

In a certain population, 18% of the people have Rh-negative blood. A blood bank serving this population receives 95 blood donors on a particular day.
What is the probability that 10 or fewer are Rh-negative?
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What is the probability that 15 to 20 (inclusive) of the donors are Rh-negative?
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What is the probability that more than 80 of the donors are Rh-positive?
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