Question

1 Felipe surveyed students at his school. He found that 78 students own a cell phone and 57 of those students own an MP3 player. There are 13 students that do not own a cell phone, but own an MP3 player. Nine students do not own either device Construct a two-way table summarizing the MP3 Player No MP3 Player Total Cell Phone No Cell Phone Total 1 2 3 4 5

Answer 1

students that own a cell phone but don't own an MP3: 78 - 57 = 21

total number of student with no cell phone: 13 + 9 = 22

total number of student with a MP3 player: 57 + 13 = 70

total number of student without a MP3 player: 21 + 9 = 30

total number of students: 70 + 30 = 78 + 22 = 100

MP3 player no MP3 player Total

cell phone 57 21 78

no cell phone 13 9 22

Total 70 30 100