Exercises
43
How many fast food outlets are there near campus?
6. At the beginning of the semester, an instructor of a music appreciation class wants to
find out how many of the 250 students had heard recordings of the music of Mozart,
Beethoven, Haydn, or Bach. The survey showed the following:
Composer Listened to by Students
No. of Students
Mozart
125
Beethoven
78
Haydn
95
Bach
62
Mozart and Beethoven
65
Mozart and Haydn
50
Mozart and Bach
48
Beethoven and Haydn
49
Beethoven and Bach
39
Haydn and Bach
37
Mozart, Beethoven, and Haydn
22
Mozart, Beethoven, and Bach
19
Mozart, Haydn, and Bach
18
Beethoven, Haydn, and Bach
13
Mozart, Beethoven, Haydn, and Bach
9
How many students had listened to none of the composers?
7. A marketing class did a sample survey to find out how many of a class of 125 people
owned CDs of the Beatles, Alabama, or Bob Marley. The results of the survey showed
the following:
Recording Artist
No. of Students Owning CDs
Beatles
65
Alabama
46
Bob Marley
29
Beatles and Alabama
18
Beatles and Bob Marley
21
Bob Marley and Alabama
12
Beatles, Bob Marley, and Alabama
9
How many of the students owned no CD featuring these performers?