Approximately 26% of people have Rh negative blood. We will check the blood tests of the next 12 people to enter an emergency clinic with injuries that may require transfusion. Assume no two belong to the same family. a) What is the probability that exactly 5 of those patients will have Rh negative blood? b) What is the probability that at least 3 of them will have Rh negative blood? c) What are the expected number and standard deviation of the number of these patients with Rh negative blood?
Approximately 26% of people have Rh negative blood. We will check the blood tests of the next 12 people to enter an emergency clinic with injuries that may require transfusion. Assume no two belong to the same family. a) What is the probability that exactly 5 of those patients will have Rh negative blood? b) What is the probability that at least 3 of them will have Rh negative blood? c) What are the expected number and standard deviation of the number of these patients with Rh negative blood?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Approximately 26% of people have Rh negative blood. We will check the blood tests of the next 12 people to enter an emergency clinic with injuries that may require transfusion. Assume no two belong to the same family.
a) What is the
b) What is the probability that at least 3 of them will have Rh negative blood?
c) What are the expected number and standard deviation of the number of these patients
with Rh negative blood?
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