Answered: Using tree diagrams solve the following…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Using tree diagrams solve the following 1. An estimated 4% of people have blood type AB+. a) If two independent people are selected, what is the probability that both have blood type AB+? b) If two independent people are selected, what is the probability that neither has blood type AB+? c) If two independent people are selected, what is the probability that at least one has blood type AB+? d) A classroom contains 24 independent students. What is the probability that nobody has blood type AB+?

Expert Solution

Introduction

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There are two types of variables, they are independent and dependent variable. Independent variable is not affected by another variable. Dependent variable is affected by the independent variable. If the two variables are independent then the probability of two events is calculated using the formula :

$P (A \cap B) = P (A) \times P (B)$