MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question

Use the contingency table to find the probabilities.

 

iPhone

No iPhone

Student

 45 56

Teacher

 13 21

 

  1. What is the probability a randomly selected individual has an iPhone or is a student?
  2. When selecting 3 individuals without replacement, what is the probability they are all students?
  3. What is the probability of selecting a person with an iPhone given the person is a teacher?

 

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