(b) A ∪ B=
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Question
In a reader survey conducted by USA Today†, readers were asked to name the best U.S. city for Italian restaurants. The results follow.
City | New York |
Chicago | Boston | Las Vegas |
San Francisco |
---|---|---|---|---|---|
Respondents (%) | 55 | 16 | 15 | 7 | 7 |
Let A denote the set of cities that were voted the best by more than 10% of the respondents, let B be the set of cities that were voted the best by between 10% and 20% of the respondents, and let C denote the set of cities that were voted the best by fewer than 10% of the respondents. Find the following sets. (Let N represent New York, H represent Chicago, T represent Boston, L represent Las Vegas, and Srepresent San Francisco. Enter your answers using roster notation. Enter EMPTY or ∅ for the empty set.)
(b)
A ∪ B=
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