A survey of128 college students was taken to determine the musical styles they liked. Of​ those,50 students listened to​ rock,38 to​ classical, and 38 to jazz.​ Also, 25 students listened to rock and​ jazz, 21 to rock and​ classical, and 12 to classical and jazz.​ Finally, 7 students listened to all three musical styles. Construct a Venn diagram and determine the cardinality for each region. Use the completed Venn Diagram to answer the following questions.   a. How many listened to only rock​ music?   n​(only ​rock)=

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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A survey of128 college students was taken to determine the musical styles they liked. Of​ those,50 students listened to​ rock,38 to​ classical, and
38 to jazz.​ Also, 25 students listened to rock and​ jazz, 21 to rock and​ classical, and 12 to classical and jazz.​ Finally, 7 students listened to all three musical styles. Construct a Venn diagram and determine the cardinality for each region. Use the completed Venn Diagram to answer the following questions.
 
a. How many listened to only rock​ music?
 
n​(only ​rock)=
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