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?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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