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 data. MP3 Player No MP3 Player Total Cell Phone No Cell Phone Total

Answer 1

57 21 78

13 9 22

70 30 100

Step-by-step explanation:

The information that is given is filled in red; the information that is deduced is filled in green.

To construct the table, we just put in the values given in the appropriate boxes. For example, there are 13 students that do not own a cell phone but own an MP3 player; therefore, the number 13 will go to the leftmost middle box.