Out of 114 pet owners, 69 own dogs, 53 own cats, and 39 own both dogs and cats. If we randomly select one pet owner, what is the probability they own neither a dog nor a cat (i.e., they own only fish)? Calculate your answer as a percent accurate to one decimal place.

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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A.  Out of 114 pet owners, 69 own dogs, 53 own cats, and 39 own both dogs and cats. If we randomly select one pet owner, what is the probability they own neither a dog nor a cat (i.e., they own only fish)? Calculate your answer as a percent accurate to one decimal place.

 

B.  Out of 123 students, 62 have finished both their math and science requirements, 19 have finished only their math requirement, 8 have finished only their science requirement, and the remaining have finished neither. If we randomly select one student, what is the probability they have finished at least one of the requirements? Calculate your answer as a percent accurate to one decimal place.

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