Researchers were interested in studying the relationship between living location (Manhattan vs. other boroughs of NYC) and anxiety. Researchers decided to randomly select 50 residents from Manhattan and 40 residents from the other four boroughs. All were free from anxiety disorders at the start of the study. They then followed the participants for three years to determine how many in each group developed an anxiety disorder.  Among residents of Manhattan, 18 out of 50 developed an anxiety disorder. Among residents of the other four boroughs, 12 out of 40 developed an anxiety disorder.  Question : The risk of developing an anxiety disorder for those living in Manhattan was _______ times the risk of developing an anxiety disorder for those living in the other boroughs.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 13CYU
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Researchers were interested in studying the relationship between living location (Manhattan vs. other boroughs of NYC) and anxiety. Researchers decided to randomly select 50 residents from Manhattan and 40 residents from the other four boroughs. All were free from anxiety disorders at the start of the study. They then followed the participants for three years to determine how many in each group developed an anxiety disorder.  Among residents of Manhattan, 18 out of 50 developed an anxiety disorder. Among residents of the other four boroughs, 12 out of 40 developed an anxiety disorder.  Question : The risk of developing an anxiety disorder for those living in Manhattan was _______ times the risk of developing an anxiety disorder for those living in the other boroughs.

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